Answer Happy

Which of the following statistical tests allows causal
inferences to be made?
t-test
Analysis of variance
Regression
None of these, it’s the design of the research that determines
whether causal inferences can be made.
Which of the following statements about outliers is not
true?
Influential cases will always show up as outliers.
Outliers have an effect on regression parameters.
Outliers have an effect on the mean.
Outliers are values very different from the rest of the
data.
What is b0 in regression
analysis?
The value of the outcome when all of the predictors are 0.
The value of the predictor variable when the outcome is
zero.
The relationship between a predictor and the outcome
variable.
The gradient of the regression line.