# 09. t test for a Single & Two Paired/ Dependent/Related Samples

## Resources: Stats of Doom

A comprehensive site created by Dr. Erin Buchanan offering lecture materials and videos for a full range of statistics concepts covered in a basic/introductory course (descriptives, graphs, z-scores, t-tests, ANOVA, correlation, regression, chi-square, etc.). Coverage also includes materials for several statistics packages (e.g., SPSS, JASP, R) Here is a link for a basic course. There […]

## Jamovi Assignments that Teach Climate Change

Kimberly A. Barchard (LinkedIn), Matthew R. Helm, John D. Watt , Kaelyn Griffin, from the University of Nevada, Las Vegas have created a series of Jamovi assignments. These 10 assignments include step-by-step instructions to take students from the basics of opening data files to the complexities of creating a professional conference poster (complete with literature review, method, results, graph, and

## Student Guide to SPSS and APA Style Writing (v.12.0)

This guide (created by Gary Lewandowski; Twitter: @LewandowskiPhD) is a free resource that can substitute for the APA Manual and SPSS guides. The Student Guide leads students through data analysis in SPSS with step-by-step instructions and screenshots for setting up the analyses and interpreting the output. For each analysis, students also see an example SPSS

## Video: One Sample and Paired-Samples t-test (SPSS for Beginners)

Video (6:02) from Research by Design and Dr. Todd Daniel, described as follows, “When we calculate the mean of a sample, we can then use a one-sample t test to compare that sample mean to another mean, such as a mean from a population, a normative group, or another known value (mean). The “one sample”

## Video: How to Do a One Sample and Paired-Samples t Test in JASP

Video (16:57) from Research by Design in which, “The One Sample t-Test is a parametric procedure that tests whether a sample mean is statistically significantly different than a population mean or other known value. We will open a CSV dataset in JASP, check the assumptions of the test, conduct the one sample t-test, interpret the

## Assignment: t-test for Dependent/Paired Samples (SPSS)

In this assignment (created by Dr. Kimberly A. Barchard and Dr. Leiszle Lapping-Carr), students learn how to use SPSS to compare dependent groups using the dependent samples t-test and using confidence intervals for the difference of the means. A detailed grading rubric is included. This assignment was designed to be completed with an existing dataset

## Assignment: Single Sample t-test (SPSS)

In this assignment (created by Dr. Kimberly A. Barchard and Dr. Leiszle Lapping-Carr), students learn how to use SPSS to conduct a single sample t-test and calculate a confidence interval and how to interpret the output for both. A detailed grading rubric is included. This assignment was designed to be completed with an existing dataset

## Lab Activity: Caramel Apples and the single sample t-test (SPSS)

This is an activity (created by Dr. Maya G. Sen) that has has students collect data that they analyze (by hand and with SPSS) using a single-sample t-test. They compare the weights of a sample of Caramel Apple Pops to the population mean (i.e., the advertised weight). Materials NeededEnough Caramel Apple Pops for everyone (including

## Exemplar Study: Does Cuteness Make Us Careful? (Mixed Design)

This article examined how the perception of cuteness influences behavioral carefulness, enhancing people’s ability to care for infants. While researchers took physiological measures of heart activity and skin conductance, they exposed participants to a slide show of pictures of either infant animals (kittens and puppies) previously judged as very cute or adult animals (cats and

## Practice: Calculating the t-test for Paired-Samples/Dependent Means (Drugs and Learning)

Instructors should assign this problem (about drugs and learning) to students as in-class practice or homework after students have learned how to calculate a t-test for dependent means and test for significance. The activity leads students through determining the type of statistical analysis to use, the hypotheses, calculating the t-ratio and effect size (if appropriate),

## Lecture Slides: Calculating the t-test for Paired-Samples/Dependent Means (Weight Loss Study)

The goal of this PowerPoint is to work through the step-by-step process of hand calculating a t-test for dependent means. The slides start with an explanation of the formula involved and then a sample problem is presented. It is designed for you to have the class solve the problem along with you as you advance

## Design & Data: How Do You Know If You Are Truly Helping? (Program Evaluation)

Key Topics and Links to Files Data Analysis Guide Applying Your Skills in the Real World: How Do You Know If You Are Truly Helping? Analyses Included: Single Sample t-test; t-test for Independent Means; Creating a Mean; Descriptive Statistics (Central Tendency)   Dataset Syntax Output BONUS – STUDY 1: How Can We Reduce Underage Drinking?

## Design & Data: Can Watching Reality TV Shows Be Good for Us? (Within-Subjects Design, t-test for Paired/Dependent Samples, and Repeated-Measures ANOVA)

Key Topics and Links to Files Data Analysis Guide Can Watching Reality TV Shows Be Good for Us? Analyses Included: t-test for Dependent Means/Paired Samples t-test; Repeated-Measures ANOVA Dataset Syntax Output BONUS: Does Talking Lead to Distracted Driving? Analyses Included: Repeated-Measures ANOVA Dataset Syntax Output The Data Analysis Guide contains all of the following: Design

## Open Stats Lab: t-test Activities

Activities focus on the following topics: (SINGLE SAMPLE and PAIRED-SAMPLES) Does Music Convey Social Information to Infants? Here students get to conduct a single/one sample t-test, a t-test for dependent means (paired samples), and can create a boxplot and/or scatterplot. (TWO INDEPENDENT SAMPLES) Do Spoken or Written Words Better Express Intelligence? Here students get to

## Practice: Calculating the t-test for Paired-Samples/Dependent Means (Thinking Logically Over Time)

Instructors should assign this problem (about graduate programs training students to think logically) to students as in-class practice or homework after students have learned how to calculate a t-test for dependent means and test for significance. The activity leads students through determining the type of statistical analysis to use, the hypotheses, calculating the t-ratio and