Question

Mike wants to see if he can predict college GPA using high school SAT scores. He should use a:

correlation, t- test, ANOVA, regression? Could you solve and explain why he used, which test? Thank you!

Answer 1

Sol:

It cannot be correlation we are not testing relationship

It cannot be t test we are not doing hypothesis test for difference in means

here we want to predict GPA using high school SAT scores

for predicting dependent variable based on independent variable use regression analysis

GPA=a*SAT +b

where a is slope

b is y intercept

if we have data we can get the regression equation and based on SAT scores we can predict GPA using regression equation.

But if its a hypothesis test to check whether the regression equation is significant or not use F test or ANOVA.

ANOVA