'Paired sample' presentation slideshows

Stats 95 t-Tests

Stats 95 t-Tests. Single Sample Paired Samples Independent Samples. William Sealy Gosset. t Distributions. t dist. are used when we know the mean of the population but not the SD of the population from which our sample is drawn t dist. are useful when we have small samples.

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Statistical inference

Statistical inference. Take a random sample of n independent observations from a population. Calculate the mean of these n sample values. This is know as the sample mean . Repeat the procedure until you have taken all possible samples of size n , calculating the sample mean of each.

562 views • 40 slides

Laboratory & Professional skills for Bioscientists Term 2: Data Analysis in R

Laboratory & Professional skills for Bioscientists Term 2: Data Analysis in R. Two sample tests: two-sample t -test, two-sample Wilcoxon (also one-sample Wilcoxon) Practical: one and two sample tests examples, different data formats ggplot. Overview of topics. Also in previous lecture.

777 views • 36 slides

Stats 95 t-Tests

Stats 95 t-Tests. Single Sample Paired Samples Independent Samples. t Distributions. t dist. are used when we know the mean of the population but not the SD of the population from which our sample is drawn t dist. are useful when we have small samples.

445 views • 31 slides

Overview

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Chapter 9 Two-Sample Tests

Part II: Introduction to Hypothesis Testing. Chapter 9 Two-Sample Tests. Renee R. Ha, Ph.D. James C. Ha, Ph.D. Integrative Statistics for the Social & Behavioral Sciences. Paired t test. Also called Correlated Groups t test. Paired t test. Use when:

412 views • 24 slides

Paired-Sample Hypotheses

Paired-Sample Hypotheses. -Two sample t-test assumes samples are independent -Means that no datum in sample 1 in any way associated with any specific datum in sample 2 -Not always true. Ex: Are the left fore and hind limbs of deer equal?

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t-Static

t-Static. 1. Single Sample or One Sample t-Test AKA student t-test. 2. Two Independent sample t-Test, AKA B etween S ubject D esigns or Matched subjects Experiment. 3. Related Samples t-test or Repeated Measures Experiment AKA Within Subject Designs or Paired Sample T-Test. CHAPTER 11.

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Presentation on Data Analysis

Presentation on Data Analysis. Z Test & T Test. PRESENTED BY : GROUP 1 MD SHAHIDUR RAHMAN ROLL# 003 MD AMINUL ISLAM ROLL# 007 MRS ROZINA KHANAM ROLL# 038. Introduction. Sometimes measuring every single piece of item is just not practical

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Comparing Two Means: One-sample & Paired-sample t -tests

Comparing Two Means: One-sample & Paired-sample t -tests. Lesson 12. Inferential Statistics. Hypothesis testing Drawing conclusions about differences between groups Are differences likely due to chance? Comparing means t -test: 2 means Analysis of variance: 2 or more means ~.

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Statistics 101: The 95% Rule

Statistics 101: The 95% Rule. David Newman, PhD. Levels of Data. Nominal Ordinal Interval Ratio Binary--- The Magic Variable. Categorical. Continuous. Questions To Ask. Are you testing the differences between groups or across time?

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Example 9.9 Husband and Wife Reactions to Sales Presentations at Stevens Honda-Olds

Example 9.9 Husband and Wife Reactions to Sales Presentations at Stevens Honda-Olds. Confidence Interval for the Difference Between Means. Objective.

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Special Case: Paired Sample T-Test

Special Case: Paired Sample T-Test. Examples Paired-sample? Car Radial Belted 1 ** ** Radial, Belted tires 2 ** ** placed on each car. 3 ** ** 4 ** ** Person Pre Post 1 ** ** Pre- and post-test

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Doing t-tests by hand

Doing t-tests by hand. Four steps. Set up null and alternative hypothesis Directional? Non-directional? Determine t-critical from table One-sample? Independent sample? Dependent (or paired sample)? Compute t-obtained

158 views • 5 slides