For Questions Below, Use the Following: a Researcher Wishes to Find

question 40

Short Answer

For questions below, use the following: A researcher wishes to find out if a speed-reading course increases reading speed. Sixteen subjects were randomly selected from the adult population and then randomly divided into two groups. Group A was given a speed-reading course, and then, because the interval scores were badly skewed, each subject was ranked according to reading speed. Their ranks were 1, 3, 4, 6, 8, 9, 10, 15. Group B received no training, and their ranks on the same test were 2, 5, 7, 11, 12, 13, 14, 16.
-Identify the type of research.

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Definitions:

Linear Regression

A statistical method for modeling the relationship between a dependent variable and one or more independent variables, assuming this relationship to be linear.

Regression Line

A line through a scatter plot of data points that best expresses the relationship between those points.

Best Fit

"Best fit" refers to a line or curve that most closely approximates the data points in a scatter plot, used in linear regression and other modeling techniques to predict outcomes.