Stepwise regression carried out by adding variables to a multiple regression model until no additional model makes a significant contribution is called ________.
A) forward selection
B) backward elimination
C) general stepwise
D) parsimony
Question 2
The margin of error used in a confidence interval is found by ________.
A) multiplying the standard error and z/2
B) multiplying the population standard deviation and the sample size
C) dividing the population standard deviation by the sample size
D) multiplying the level of confidence and the standard error
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