2012, Question 6 · Investigative Task, no longer on the exam · 4 points · about 25 minutes
Two ways to estimate soft drink use
Describe how to draw a simple random sample, compute standard errors for a simple random sample mean and for a stratified weighted estimator, and use dotplots to explain why stratifying helped.
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 (c) relies on the variance of a linear combination of independent sample means, which the current course no longer includes.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2012 exam. It starts on page 11 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 September 15, 2025.
Open Question 6 (PDF, page 11)
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 17) What the exam readers saw (Student Performance Q&A)
Question, scoring guidelines and Chief Reader report: College Board, from the Internet Archive. The title, summary are ours.