2010, Form B, Question 6 · Investigative Task, no longer on the exam · 4 points · about 25 minutes
House prices, size and swimming pools
Interpret a regression slope and a residual, use residuals to estimate the price effect of a pool, judge a difference in slopes from an interval, and compare two estimates of the pool effect.
This exam had six free-response questions, each scored from 0 to 4. Its Question 6, the Investigative Task, is no longer part of the exam. The current exam has 4 free-response questions in 90 minutes. The skills these questions practice still count.
Not in the current course. Part (d) asks about a confidence interval for a difference in regression slopes, which the current course no longer includes.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2010, Form B exam. It starts on page 9 of the PDF. College Board no longer posts this exam, so it opens from the copy of College Board's PDF that the Internet Archive saved on December 4, 2025.
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 16)
Question, scoring guidelines and Chief Reader report: College Board, from the Internet Archive. The title and summary are ours.