To determine if a regression model is useful, the a. fit (or ...

[ereecah]

To determine if a regression model is useful, the
 a. fit (or prediction) should be bigger, on average, than error
  b. coefficients (the b's) should be clearly different from zero
  c. p value should be greater than the F-test value
  d. all of the above
  e. both a and b

Question 2

Analyses that test hypotheses and models involving multiple (three or more) variables or sets of variables are referred to as _____ statistical analyses.
 Fill in the blank(s) with correct word

[peilian]

Answer to Question 1

E
If the fit is greater than the error and the coefficients clearly different from zero, the regression model will be useful.

Answer to Question 2

multivariate