Chapter 2.1, Problem 29AYU

(a)

To determine

To define: A research objective of the provided study.

(b)

To determine

To explain: Whether the provided study is observational or experimental.

(c)

To determine

To explain: An example where the researcher controlled the variables in the provided study.

(d)

To determine

To explain: Why assigning homework to two different classes will confound the study.

(e)

Section 1

To determine

To identify: The variables in the provided data table.

Section 2

To determine

To define: Whether the variables are qualitative or quantitative.

Section 3

To determine

To define: Whether the variables are discrete or continuous.

(f)

To determine

To explain: The type of variable that a letter grade is.

To determine

To explain: The level of measurement of letter grade.

To determine

To explain: A better way to represent the provided data.

(g)

To determine

To explain: The type of graph that is displayed.

(h)

To determine

To explain: Whether the provided data can be represented as a pie chart.

(i)

To determine

To explain: The conclusion for students with no prior college experience.