Published: Dec 24th, 2012

A study examined how the percentage of participants who completed a survey is related to the monetary incentive that researchers promised to participants. Consider the relationship between these two quantitative […]

Published: Nov 14th, 2012

The following videos were created for this section and the full course summary and is presented in both locations. View Lecture Slides with Transcript for Parts G and H of […]

Published: Aug 21st, 2012

IMPORTANT: The methods covered in this section on correlation are only applicable for LINEAR relationships. Introduction The Correlation Coefficient — r Interpretation Properties of r CO-4: Distinguish among different measurement scales, […]

Published: Aug 21st, 2012

Creating Scatterplots Interpreting Scatterplots Direction Form Strength A Labeled (or Grouped) Scatterplot Let’s Summarize CO-4: Distinguish among different measurement scales, choose the appropriate descriptive and inferential statistical methods based on these […]

Published: Jul 28th, 2012

Learn By Doing: Supplemental Examples and Exercises for Unit 4B (Non-interactive Version) As we mentioned at the end of the Introduction to Unit 4B, we will focus only on two-sided […]