Sample Size Calculation Depends on: Level of Type I error: 0.05 typical Level of Type II error: 0.20 typical One sided vs two sided: nearly always two Inherent variability of population Usually estimated from preliminary data The difference that would be meaningful between the two assessment arms. types of data. PPT - Overview Biostatistics Applications of Statistics in Research Statistical Tests Parametric tests Continuous data normally distributed Non-parametric tests Continuous data not normally distributed Categorical or Ordinal data, Comparison of 2 Sample Means Students T test Assumes normally distributed continuous data. Research Method.ppt 1 of 70 Research Method.ppt Feb. 01, 2010 169 likes 47,695 views Education Shama Follow Advertisement Advertisement Recommended Research in education Vijayalakshmi Murugesan 2.3k views 65 slides Research methodology Md Saifullah Khalid 7.1k views 32 slides Rm chapter 2 report cheppumol 535 views 10 slides ADVANCED STATISTICAL METHODS IN AGRICULTURAL RESEARCH - . When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. In it's simplest, idealized form, the random walk problem can be viewed as in the figure . Test to compare several means. (PDF) Use of Statistics in Research Statistical Methods in Clinical Trials - . If so, just upload it to PowerShow.com. [contact-form-7 id="40123" title="Global popup two"], Effective Use of Statistics in Research Methods and Tools for Data Analysis, By clicking this checkbox you consent to receiving newsletters from Enago Academy. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Spies M.D., MPH Professor of Radiology Georgetown University School of Medicine Washington, DC. N. lt(?m)2gt lt(m - ltmgt)2gt in the net displacement? Analysis of Time Series Data 9.1 Basic concepts 9.2 General model formulations 9.3 Smoothing methods 9.4 OLS regression models 9.5 Stochastic time series CHAPTER 2 Research Methods in Industrial/Organizational Psychology. You might get some help from www.HelpWriting.net Success and best regards! For example, suppose we measure the weight of 100 patients in a study. continuous blood pressure time to event. Temporarily, lets treat p q as arbitrary, NOTE that, if p is a continuous variable, then we, Now, use this in (1) (interchanging the sum the, ltn1gt ? Cathy Walker. PPT - Applications of Statistics in Research PowerPoint Presentation February 13, 2010. august 12, 2009. Would need to do pair-wise tests. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. She is currently a Learning / Research Analyst, working in the Centre for Learning Environment and Assessment Development (CoLEAD) at Singapore Institute of Technology (SIT). Whatever your area of interest, here youll be able to find and view presentations youll love and possibly download. cocke-kasami-younger parsing algorithm: Statistical methods in NLP - . We've encountered a problem, please try again. PPT - Introduction to Statistical Analysis PowerPoint Presentation Test to Compare Two Population Variances. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. Well convert it to an HTML5 slideshow that includes all the media types youve already added: audio, video, music, pictures, animations and transition effects. Free access to premium services like Tuneln, Mubi and more. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. christopher s. coffey. Non-parametric Tests Testing proportions (Pearsons) Chi-Squared (2) Test Fishers Exact Test Testing ordinal variables Mann Whiney U Test Kruskal-Wallis One-way ANOVA Testing Ordinal Paired Variables Sign Test Wilcoxon Rank Sum Test. Explanatory & Response Variable in Statistics A quick guide for early career researchers! PPT - Statistical Methods in Clinical Research PowerPoint Presentation They are all artistically enhanced with visually stunning color, shadow and lighting effects. Data presentation is an extension of data cleaning, as it involves arranging the data for easy analysis. Measures of Central Tendency - Biostatstics, GCSE Geography: How And Why To Use Spearmans Rank, ppt on data collection , processing , analysis of data & report writing, CABT Math 8 measures of central tendency and dispersion, MEASURES OF CENTRAL TENDENCY AND MEASURES OF DISPERSION, Measures of central tendency and dispersion, STATISTICAL PROCEDURES (Discriptive Statistics).pptx, SHAYA'A OTHMAN MANAGEMENT & RESEARCH METHODOLOGY, Measures of central tendency ict integration, Continuing Our Look At Primary And Secondary Data, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. PPT Chapter 1: Introduction to Statistics - UBalt Sample Size for Continuous Data Stata input: Mean 1 = 20, mean 2 = 30, = .05, power (1-) =.8, std. Click here to review the details. lt(?n1)2gt (in general). All available places can be occupied in, Note However! After N steps, the particle is at position, Let n1 of steps to the right (of N), n2, Thus, if N is odd, so is m and if N is even, so, successive steps are statistically independent, Let p the probability of stepping to the right, Since each step is statistically independent, the, But, also, clearly, there are MANY different, The of distinct possibilities is the SAME as, 1st place Can be occupied any one of N ways, 2nd place Can be occupied any one of N - 1, 3rd place Can be occupied any one of N - 2, (N 1)th place Can be occupied only 2 ways, ? Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Research Scholar - HNB Garhwal Central University, Srinagar, Uttarakhand. Descriptive Statistics Descriptive statistics are methods for organizing and summarizing data. The Probability of an occurrence of a particular, Example In throwing a pair of dice, we can give, Note that this probability depends strongly on. # $ % & ' ( ) * The SlideShare family just got bigger. When comparing two samples, we usually cannot be sure which is going to be be better. Free access to premium services like Tuneln, Mubi and more. Analysis of Variance Used to determine if two or more samples are from the same population- the null hypothesis. If it appears they are not from same population, cant tell which sample is different. Example: A relative risk of 4 might have a confidence interval of 1.05 to 9, suggesting that although the estimate is for a 400% increased risk, an increased risk of 5% to 900% is plausible. The function of statistics in research is to purpose as a tool in conniving research, analyzing its data and portrayal of conclusions there from. The probability of stepping to, to the left is q 1 p. In general, q ? 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The independent variable is often seen as influencing, directly or indirectly, the dependent variable. Sample size for proportions Stata input: Mean 1 = .2, mean 2 = .3, = .05, power (1-) =.8. +KRs8@f Pdk )px!` mC#07jd}c^ ! 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Almost never, NOTE A knowledge of the probability distribution, In order to uniquely determine a distribution, Also well discuss a few math tricks for doing, The probability in N steps of making n1 to the, p the probability of a step to the right, q 1, (p q)N ? Test about a slope. ? qlrFFQ~]$M\I%?TI%)345 NKaa#>:Gc In inferential statistics, we are generally using a sample. Click here to review the details. Ratio of two interval data points has no meaning Temperature in celsius, day of the year). Sample Size Calculation Also called power analysis. Chapter 10 Data Monitoring, Monitoring Committee Function, - Chapter 10 Data Monitoring, Monitoring Committee Function & Statistical Methods. REACH Resources | Informing more effective humanitarian action Learn more about our, I am looking for Editing/ Proofreading services for my manuscript, Role of Statistics in Biological Research, Types of Statistical Research Methods That Aid in Data Analysis, Use of Statistical Tools In Research and Data Analysis, publication-worthy figures, tables and charts. Statistical Method - an overview | ScienceDirect Topics Statistical Methods in Clinical Trials - . We've encountered a problem, please try again. This may lead to a negative study outcome in error. ? They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Clinical Research Methods - . Activate your 30 day free trialto continue reading. supported by the institute for clinical and translational, Practical Applications of Statistical Methods in the Clinical Laboratory - . Steps of Statistical Applications (Practical guides for beginners) Begin at the conclusion Identify the primary research question Identify . Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. STATISTICAL TOOLS NEEDED - PowerPoint PPT Presentation The sample is chosen by selecting a random starting point and then picking every i th element in succession from the sampling frame. Comparative descriptive survey research design was employed to answer the research questions raised. James B. PPT Basics of Statistics Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. - biomedical Signal processing Chapter 1 Introduction Zhongguo Liu Biomedical Engineering School of Control Science and Engineering Analysing continuous data Parametric versus Non-parametric methods. Test of Strength & Direction of Linear Relationship of 2 Quantitative Variables. The Statistics and Methods Core supports CCPR research and training by providing expertise in the choice, development, and implementation of statistical methodology. For the, Again note that ltn1gt Np. The type of data defines: The summary measures used Mean, Standard deviation for continuous data Proportions for discrete data Statistics used for analysis: Examples: T-test for normally distributed continuous Wilcoxon Rank Sum for non-normally distributed continuous, Descriptive Statistics Characterize data set Graphical presentation Histograms Frequency distribution Box and whiskers plot Numeric description Mean, median, SD, interquartile range, HistogramContinuous Data No segmentation of data into groups, Frequency Distribution Segmentation of data into groups Discrete or continuous data, Box and Whisker Plots Popular in Epidemiologic Studies Useful for presenting comparative data graphically, Numeric Descriptive Statistics Measures of central tendency of data Mean Median Mode Measures of variability of data Standard Deviation Interquartile range. Practical Statistics for Medical Research, Correlation Correlation Coefficient .3 Correlation Coefficient 0 Source: Altman. Brief description about Descriptive statistics for dummies with solved examples. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. - Chapter 9. ! " u " Clipping is a handy way to collect important slides you want to go back to later. P Values and Confidence Intervals Confidence intervals provide a range of plausible values of the population mean For most tests, if the confidence interval includes 0, then it is not significant. This can be easily generalized to 2 dimensions. Many of them are also animated. Practical Statistics for Medical Research. STATISTICS IN Sample Median Used to indicate the average in a skewed population Often reported with the mean If the mean and the median are the same, sample is normally distributed. Is the most common value More frequently used to describe the distribution of data Uni-modal, bi-modal, etc. Introduction We are focusing on "quantitative analysis" The general idea is to summarize and analyze data so that it is useful for decision-making We do this by calculating "measures of central tendency" and by looking for relationships (We will NOT cover formal tests of hypotheses) Primary vs. secondary data sources Data on uses - Chapter 10: Inference from Small Samples Introduction When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. Also called a error. Research Scholar at Indian Institute of Technology, Madras. So, the relative, ? continuous data. a large study dooms you to statistical significance Anonymous Statistician. Research Method.ppt - SlideShare Looks like youve clipped this slide to already. Tap here to review the details. Statistical Methods in Clinical Research. Tap here to review the details. - Chapter 1: Introduction and Research Methods What is Psychology? While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. As N increases, the mean value increases ? You can read the details below. ` / 0 D A r i a l G r a n d e 0 P P \, O0 D L u c i d a G r a n d e 0 P P \, O0 @ . Can be ratio Ratio of the measures has meaning Weight, height, Types of Data Why important? Methods of Collecting Data biomedical Signal processing ???????? Sample Mean Most commonly used measure of central tendency Best applied in normally distributed continuous data. Sampling.ppt - Google Slides dev. Our new CrystalGraphics Chart and Diagram Slides for PowerPoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. Sample Mode Infrequently reported as a value in studies. Statistical methods rcm business 2.3k views 34 slides Basics stat ppt-types of data Farhana Shaheen 23.3k views 35 slides Introduction to statistics akbhanj 31k views 18 slides Spss an introduction Suresh Thengumpallil 12.1k views 25 slides Data Ashutosh Mittal 26.8k views 45 slides 1.2 types of data Long Beach City College 1.8k views Ist Yr MSc(N) Arriving at the Junction of Statistics and Biology: My Journey ~ :q;M }ARv=vc[NHev]UB E1Gn ?zE. What is the mean displacement, ltxgt ltmgtl? So, lt(?m)2gt 4lt(?n1)2gt, Summary 1 Dimensional Random Walk Problem, Probability Distribution is Binomial WN(n1), Mean number of steps to the right ltn1gt Np. Types of Data Discrete Data-limited number of choices Binary: two choices (yes/no) Dead or alive Disease-free or not Categorical: more than two choices, not ordered Race Age group Ordinal: more than two choices, ordered Stages of a cancer Likert scale for response E.G. Sample size calculation yields the number of study subjects needed, given a certain desired power to detect a difference and a certain level of P value that will be considered significant. And theyre ready for you to use in your PowerPoint presentations the moment you need them. Tap here to review the details. We've updated our privacy policy. Research Methods and Statistics - PowerPoint PPT Presentation - PowerShow Clearly, m n1 n2, so ltmgt ltn1gt - ltn2gt N( p, So, if p q , ltmgt 0 so, ltxgt ltmgtl 0, Question 3 What is the dispersion (or variance), That is, what is the spread in n1 values about, So, we first need to calculate the quantity, Use a similar trick as we did before note, After algebra (in the book) using p q 1, we, So, finally, using lt(?n1)2gt lt(n1)2gt - (ltn1gt)2, This is the dispersion or variance of the, The root mean square (rms) deviation from the, (?n1) ? - CHAPTER 2 Research Methods in Industrial/Organizational Psychology Introduction to Industrial/Organizational Psychology by Ronald Riggio Social Scientific Research Chapter%207%20Sampling%20and%20Sampling%20Distributions. Activate your 30 day free trialto unlock unlimited reading. We've updated our privacy policy. > g chapter 7(7.1 &7.2): theory and application of the, An Intensive Course in Clinical Research Methods - . Shermain Puah - Learning Research Analyst - LinkedIn Clipping is a handy way to collect important slides you want to go back to later. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: Clinical Research Methods - . Used with nominal data (better/ worse; dead/alive) If there is a substantial difference between observed and expected, then it is likely that the null hypothesis is rejected. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. TI%)$IJB'mVl~~ {kc$N/^\p% I]zDdA h7+L$"H.1KaP Zs.emeni"^]WON/~whm{+?4sZ@2 !X(5Ze `gookv mp9@TX_Ku~K%goECcx:n;?(7 Statistical methods assist in classification in four ways: in devising probability models for data and classes so that probable classifications for a given set of data can be identified; in developing tests of validity of particular classes produced by a classification scheme; in comparing different classification schemes for effectiveness; and charles e. mcculloch division of biostatistics. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. @ n ? " {k68vX o F?5z[gfA)aU[x[~z ^SK&Kamis~ [] 5okev{\-p5}a0Ly O/;]/nEQ)Rllp.k$n-w87[W n)f3}u=[`9cf UhsH-"A N atoms, each with magnetic moment . Selection of appropriate statistical methods for data analysis Zhi Chen - Milwaukee, Wisconsin, United States - LinkedIn Statistical Methods - SlideShare Document presentation format: On-screen Show Company: SIMS, UC Berkeley Other titles: Times New Roman Book Antiqua Wingdings pvf-112000 Introduction to Statistical Analysis Approximate (!) ! " Chapter 1 Introduction. The dependent variable is always the property you are trying to explain; it is always the object of the research. Do not sell or share my personal information, 1. Sz_]WMi4}S:4c_KC%. 3rd edition. Looks like youve clipped this slide to already. x d P xuKAs b*Q0*9" (#D4FhgcZ;bg*sF"q][m\D Dt+a]|a#lsn8,3_:?i5jrWydw #T iv^\s'fRf9/j&&vFs7nKS"_EGiIC-JK|T7{E?cxgM/(+Q1gKzehH}O'4iUA3Mc+2c~zK|{} Dvk9/ @ H | xcdd``> @c112BYL%bpu. Now customize the name of a clipboard to store your clips. Our product offerings include millions of PowerPoint templates, diagrams, animated 3D characters and more. diana trandabat 2013-2014. the sentence as a string of words e.g i saw the lady with. # $ % & ' ( ) * + , - . So, the of distinct ways in which N objects, This is the same as the of distinct ways of, The probability WN(n1) of taking N steps, with, This probability distribution is called the, This is because the Binomial Expansion has the, We really want the probability PN(m) that x ml, PN(m) WN(n1). STATISTICAL ANALYSIS Activate your 30 day free trialto unlock unlimited reading. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. H H JFIF H H Adobe_CM Adobe d diana trandabat 2013-2014. cky parsing. Example: A company advertises the net weight of its cereal is 24 ounces. data sharing / standardization. Test to compare two means (independent) Test to compare two means (paired) Test to compare two proportions. Clipping is a handy way to collect important slides you want to go back to later. Spies M.D., MPH Professor of Radiology Georgetown University School of Medicine Washington, DC, Overview Data types Summarizing data using descriptive statistics Standard error Confidence Intervals, Overview P values One vs two tailed tests Alpha and Beta errors Sample size considerations and power analysis Statistics for comparing 2 or more groups with continuous data Non-parametric tests, Overview Regression and Correlation Risk Ratios and Odds Ratios Survival Analysis Cox Regression, Further Study Medical Statistics Made Easy M. Harris and G. Taylor Informa Healthcare UK Distributed in US by: Taylor and Francis 6000 Broken Sound Parkway, NW Suite 300 Boca Raton, FL 33487 1-800-272-7737. Quantitative vs. Qualitative: Prototypical Studies Experimental or correlational designs are used to reduce error, bias and the influence of extraneous . Power is the ability of a study to avoid a Type II error. Standard Error A fundamental goal of statistical analysis is to estimate a parameter of a population based on a sample The values of a specific variable from a sample are an estimate of the entire population of individuals who might have been eligible for the study. - An Introduction to Statistical Problem Solving in Geography - 2nd Edition . Tentative date of next journal submission: For what are you most likely to depend on AI-assistance? course overview course. The independent variable usually occurs earlier in time than the dependent variables. InternImage: Exploring Large-Scale Vision Foundation Models with Deformable C caissonsdisease-141212190240-conversion-gate01.pdf, GED260 Colorado Christian University Definition of Drug Addiction Paper.pdf, WTSFest 2023 - Data Storytelling, Lazarina Stoy. The aim of this study was to compare PPT and traditional lecture method in material understandability, effectiveness and attitude among university students. Statistics presents a rigorous scientific method for gaining insight into data. methods research methods quantitative methods qualitative methods mathematical statistical methods interviews structured semi structured Download Presentation Research Methods An Image/Link below is provided (as is) to download presentation or the 2nd Moment of P(u) about the mean. (Pearsons) Chi-Squared (2) Test Used to compare observed proportions of an event compared to expected. Hidden error because cant be detected without a proper power analysis. The SlideShare family just got bigger. Teaching Assistants: Katie Tranbarger & Scott Spicer, Y or unravel reasons/causes of - MAS1401 Statistical Methods An Introduction to Statistical Methods used in the Agricultural and Biological Sciences Lecturer: Dr David Walshaw School of Mathematics Statistics 202: Statistical Aspects of Data Mining, - Statistics 202: Statistical Aspects of Data Mining Professor David Mease Tuesday, Thursday 9:00-10:15 AM Terman 156 Lecture 13 = Finish Chapter 5 and Chapter 8, - Title: CHAPTER 6: LINEAR PROGRAMMING Author: chen_zhimin Last modified by: user Created Date: 10/20/2004 1:00:08 PM Document presentation format. Qualitative Vs. Quantitative Research A step-wise guide to conduct research. In her current role, she is involved with the collection and analysis of big data for institutional and pedagogical research, and presentation of findings to internal . Data presentation. ? Statistical research is the rigorous development of improved or new statistical methods grounded in probability and statistical theory. Walker, Glenn A., and Jack Shostak. Similarly, we can, Of course, ltn1gt ltn2gt N(p q) N as it. PPT - Research Methods PowerPoint Presentation, free download - SlideServe A measure of the precision of a sample in estimating the population parameter. The mean value of the deviation from the mean, Now, lets look at (?u)2 (u - ltugt)2 (square of, Its mean value is lt(?u)2gt lt(u - ltugt)2gt, ltu2gt - 2ltugtltugt (ltugt)2 ltu2gt - (ltugt)2, This is called the Mean Square Deviation (from. They, So, its very important to spend some time on. Most research studies result in a extensive. @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f h i j k l m n o p q r s t u v w x y z { | } ~ Fn KT XAYM( JFIF f f Exif MM * b j( 1 r2 i f f Adobe Photoshop CS Macintosh 2008:11:28 11:45:55 &( . When designing a study, one needs to determine how large a study is needed. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. P values, Statistical Methods in Clinical Research James B. I am looking for Editing/ Proofreading services for my manuscript