The application of statistical methods extracts information from . then given by the fraction of these experiments in which two . Example: A company advertises the net weight of its cereal is 24 ounces. Click here to review the details. 10. The probability of stepping to, to the left is q 1 p. In general, q ? Activate your 30 day free trialto continue reading. Mid-value in interquartile range. august 12, 2009. Brief description about Descriptive statistics for dummies with solved examples. Four hundred and twenty nine participants were selected randomly using stratified sampling followed by lottery method. Even if its Macroscopic parameters, Section 1.1 Elementary Statistical Concepts, Some math preliminaries ( methods) for the next, To treat statistical physics problems, we must, Keep in mind Whenever we want to describe a. Introduction to Statistical Computing in Clinical Research - . P Values The probability that any observation is due to chance alone assuming that the null hypothesis is true Typically, an estimate that has a p value of 0.05 or less is considered to be statistically significant or unlikely to occur due to chance alone. large data, Statistical Methods - . (n1 0?N) N!/(n1!n2! Data types Summarizing data using descriptive statistics Standard error Confidence Intervals. Chapter 1 Introduction. 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 ? (Ensemble the French word for assembly). You might even have a presentation youd like to share with others. Whatever your area of interest, here youll be able to find and view presentations youll love and possibly download. Activate your 30 day free trialto continue reading. And, again, its all free. # $ % & ' ( ) * For the, Again note that ltn1gt Np. You might get some help from www.HelpWriting.net Success and best regards! course overview course. Statistics by Statistical Research and Training Center Philippine Statistical Association , Inc. (Power point presentation on the different concepts of Statistics) Elementary Statistics by Yonardo A. Gabuyo et. Looks like youve clipped this slide to already. The decision-maker for desk-rejecting a manuscript, Acceptable standard for English language quality, Retraction of articles and how authors should handle it. Most research studies result in a extensive. When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. Looks like youve clipped this slide to already. 3. For example, suppose we measure the weight of 100 patients in a study. Introduction to Statistical Computing in Clinical Research - Today. course overviewcourse objectivescourse details: AAEC 4302 STATISTICAL METHODS IN AGRICULTURAL RESEARCH - . Well convert it to an HTML5 slideshow that includes all the media types youve already added: audio, video, music, pictures, animations and transition effects. Explanatory & Response Variable in Statistics A quick guide for early career researchers!  4 R $ KT XAYM( "n R $ SJqO& U "n R $ 2N[q Do not sell or share my personal information, 1. Research Scholar at Indian Institute of Technology, Madras. data analysis techniques and statistical softwares. collecting and describing data. Confidence Intervals May be used to assess a single point estimate such as mean or proportion. H H JFIF H H Adobe_CM Adobe d 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. Ratio of two interval data points has no meaning Temperature in celsius, day of the year). If so, just upload it to PowerShow.com. 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. CCPR offers "drop-in" statistical consulting services to meet short-term needs of CCPR affiliates. 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. 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. This analysis doesnt take into. Standard Error Standard error of the mean Standard deviation / square root of (sample size) (if sample greater than 60) Standard error of the proportion Square root of (proportion X 1 - proportion) / n) Important: dependent on sample size Larger the sample, the smaller the standard error. Standard Error Significance: Is the basis of confidence intervals A 95% confidence interval is defined by Sample mean (or proportion) 1.96 X standard error Since standard error is inversely related to the sample size: The larger the study (sample size), the smaller the confidence intervals and the greater the precision of the estimate. Often presented graphically as a 2 X 2 Table, Chi-Squared (2) Test Chi-Squared (2) Formula Not applicable in small samples If fewer than 5 observations per cell, use Fishers exact test, Correlation Assesses the linear relationship between two variables Example: height and weight Strength of the association is described by a correlation coefficient- r r = 0 - .2 low, probably meaningless r = .2 - .4 low, possible importance r = .4 - .6moderate correlation r = .6 - .8 high correlation r = .8 - 1 very high correlation Can be positive or negative Pearsons, Spearman correlation coefficient Tells nothing about causation, Correlation Source: Harris and Taylor. Qualitative Vs. Quantitative Research A step-wise guide to conduct research. Clipping is a handy way to collect important slides you want to go back to later. You never know which directions study results will go. Clinical Research Methods - . (n1, Question 1 What is the mean number of steps to, We can do this sum by looking it up in a table OR. Would need to do pair-wise tests. For quantitative data, you can use statistical analysis methods to test relationships between variables. ~ :q;M }ARv=vc[NHev]UB E1Gn ?zE. 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. ` / 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 @ . We've encountered a problem, please try again. Sample Mode Infrequently reported as a value in studies. The SlideShare family just got bigger. Dr. Shamanthakamani Narendran M.D. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint, - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. 3rd edition. The aim of this study was to compare PPT and traditional lecture method in material understandability, effectiveness and attitude among university students. Data Analysis and Presentation Describing and Presenting Data Three important criteriaaccuracy, conciseness, and understandability Researchers should always present their data in ways that most accurately represent the data Numerical data can be classified as numerical (example: percentages, (means) or graphical (graphs) method) Statistics Three areas: 1) Descriptive - central tendency . ! " Table of contents Methods for collecting data Examples of data collection methods Methods for analyzing data N atoms, each with magnetic moment . Ratios: if CI includes 1, then is not significant The interval contains the true population value 95% of the time. A very large study might find that a difference of .1 on a VAS Scale of 0 to 10 is statistically significant but it may be of no clinical significance A large study might find many significant findings during multivariable analyses. Clipping is a handy way to collect important slides you want to go back to later. UCLA STAT 13. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Typically 0.05 is used, Errors Type II error Claiming there is no difference between two samples when in fact there is. It appears that you have an ad-blocker running. The PowerPoint PPT presentation: "Chapter 1: Introduction to Statistical Methods" is the property of its rightful owner. STATISTICAL ANALYSIS To quantitatively introduce probability concepts, In its simplest, idealized form, the random walk, as in the figure above A drunk starts out from, Each step he takes is of equal length l. The man, direction of each step (right or left) is, preceding step. 8p" O . R $ i4N5y } R $ `N%L B RX R $ M>3O'2 X R $ data sharing / standardization. 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. The Statistics and Methods Core supports CCPR research and training by providing expertise in the choice, development, and implementation of statistical methodology. In inferential statistics, we are generally using a sample. d d @ @@ `` H ( c The scientific study of behavior and mental processes Philosophical Developments A Question Introduction%20linkage%20analysis,%20Genetic%20markers,%20mapping%20functions%20Lecture%203. This can be easily generalized to 2 dimensions. Sample Size Calculation Also called power analysis. As N increases, the mean value increases ? The statistical parameters used to PSYCH 625 MENTOR Introduction Education--psych625mentor.com, - FOR MORE CLASSES VISIT www.psych625mentor.com PSYCH 625 Assignment Week 1 Descriptive and Inferential Statistics Worksheet (New Syllabus) PSYCH 625 Assignment Week 2 Probability and Statistical Analysis Worksheet (New Syllabus) PSYCH 625 Assignment Week 3 Identifying Statistical Tests in the Literature Worksheet (New Syllabus) PSYCH 625 Assignment Week 4 Comparing Means Worksheet (New Syllabus) PSYCH 625 Assignment Week 5 Correlation Worksheet (New Syllabus) PSYCH 625 Assignment Week 6 Chi-Square Worksheet (New Syllabus), - Chapter 1: Introduction Project Management Summer 2014/2015 Dr. Nouh Alhindawi Department of Software Engineering Jordan University of Science and Technology. REACH Resources | Informing more effective humanitarian action allen s chapter 7 j&m s chapters 8 and 12. statistical methods. The dependent variable is always the property you are trying to explain; it is always the object of the research.