Question 3

In a(n) ________________, one or more variables are identified and controlled or manipulated so that data can be obtained about how they influence the variable of interest identified first.

Group of answer choices

Regression study

a) None of the choices

b) Observational study

c) Variable study

d) Experimental study

Question 4

In linear regression analysis the quantity that gives the amount by which the dependent variable changes for a unit change in the independent variable is called the

a) coefficient of determination

b) standard error

c) correlation coefficient

d) slope of the regression line

e) none of the choices