For this weeks assignment you will construct graphs, compute a correlation coefficient, and explain how the correlation can be used to support a specific type of reliability or validity

Overview

For this weeks assignment you will construct graphs, compute a correlation coefficient, and explain how the correlation can be used to support a specific type of reliability or validity.

Preparation

Before you begin this assignment, complete the following:

• Download the Week 7 Assignment Worksheet [DOCX].
• Download the Week_7_Assignment_Data.csv file.

Instructions

Complete and submit the Week 7 Assignment worksheet.

Competencies Measured

By successfully completing this assignment, you will demonstrate your proficiency in the following course competencies and rubric criteria:

• Competency 1: Communicate research findings using data visualizations.
  • Check the assumptions of Pearson’s r using graphs.
• Competency 2: Interpret statistical findings in the context of their level of statistical and practical significance.
  • Interpret the statistical significance of a hypothesis test.
• Competency 3: Conduct statistical analyses to address research questions in the social sciences.
  • Use JASP to construct a scatterplot and histograms.
  • Use JASP to compute a correlation coefficient.
• Competency 6: Explain why measurement of research variables must be reliable and valid.
  • Discuss how your correlation can be used to support a specific type of reliability or validity.

Week 7 Assignment

For this assignment you will use the Week_07_Assignment_Data.csv file, which can be found on the Week 7 Assignment page in Canvas. This is a hypothetical dataset. Assume these data were collected from a representative sample of students enrolled in one large introductory statistics course. Prior to taking the first exam in the course, students completed two measures of text anxiety: Old_Test_Anxiety and New_Test_Anxiety.

Old_Test_Anxiety is an existing measure of test anxiety. It’s scores are known to be highly reliable and valid. A group of researchers are concerned that some of the questions on the old survey may be getting outdated, so they’ve developed a new survey to measure test anxiety: New_Test_Anxiety. The researchers have asked a sample of students in one introductory statistics course to take both the old and new