STATS 110 Study Guide - Final Guide: Scatter Plot, Simple Linear Regression, Null Hypothesis
Document Summary
Statistics 110/201 practice final exam key (regression only) Questions 1 to 5: there is a downloadable stata package that produces sequential sums of squares for regression. In other words, the ss is built up as each variable is added, in the order they are given in the command. The last page of this exam gives output for the following situation. The data consist of the 68 houses from appendix c7 that have quality = 1. Y = sales price of the house ( salesprice on the output), and the three predictor variables are: X1 = square feet divided by 100 = sqft100 on the output. X2 = number of bedrooms = bedrooms on the output. X3 = lot size in square feet= lotsize on the output. The model used did not involve any transformations; it is e{yi} = 0 + 1xi1 + 2xi2 + 3xi3 .
