How to Add Plus Sign Before Numbers in Excel

a. State your a priori hypotheses about the sign ( or -) of each predictor and your reasoning about cause and effect. Would the intercept have meaning in the problem? b. Does your sample size fulfill Evans' rule? c. Generate a correlation matrix for your predictors. Round the results to 3 decimal places. Based on the correlation matrix, is collinearity a problem? d. Perform the regression and detail your steps of eliminating variables. e. Provide the output of the final regression. f. State you