6 1 point If you are running a linear regression and (although unlikely) the line of best fit happens to fit perfectly to the data, what will the sum of your residuals be? O 0 1 -1 O None of the above 7 1 point Which of the following tests is used in the background of a linear regression to test whether the slope is significant? None of the above OO a z-test an F-test OO a p-test 1 point A with high is an observation that is very different from one the rest of the data points and which changes the line of best fit outlier; skew OOO residual; value outlier; influence residual; R2 9 1 point A researcher is interested in examining whether there is a difference between preference for ice cream flavors for the elderly, adults, and children. They survey 200 people on which flavor of ice cream (chocolate, vanilla, or strawberry) is their favorite. What test would we use to answer this question? O One-Way ANOVA Chi-Square Goodness of Fit OOO Independent samples t-test None of the above