The R2 statistic tests whether the overall regression equation is statistically significant.

A parameter is said to be statistically significant if there is sufficient evidence that the true value of the parameter does not equal zero. 

In a linear regression equation of the form , the intercept parameter a shows the value of X when Y is zero.

Consider the following demand function which is estimated using a nonlinear specification

In a regression equation, the random error term captures the effects of factors that might influence the dependent variable but aren’t used as explanatory variables.

I want to maintain my current weight for over a year to because I don’t want to buy all new clothes again.

I hit my current weight loss goal of getting under 190lbs. 

A researcher found no significant effect of their intervention on anxiety scores, z = -.85, p > .05. True or False? The researcher could have made a Type II error with this conclusion.

A hypothesis is a statement about a _________________; ________________ data is used to test this hypothesis.

Larger sample sizes:  (select ALL that apply!)