AP Statistics · Topic 2.3

Statistics for Two Categorical Variables Practice

Part of Exploring Two-Variable Data.(UNC-1.I)

Practice questions

2

Want a predicted score for the whole AP STAT exam? Take the 20-question diagnostic and Lumi will plan the rest.

Take diagnosticarrow_forward Practice all 2.3

Sample questions

2 of 2 — sign in to practice the rest with adaptive difficulty and mastery tracking.

Sample 1difficulty 2/5
$The table shows disease outcomes by vaccination status.$
$Compare the conditional risks of being sick.$
- A
  $Vaccinated 0.02; Unvaccinated 0.10$
  check_circle
- B
  $Cannot be computed$
- C
  $Vaccinated 0.10; Unvaccinated 0.02$
- D
  $Both 0.06$
Why
$P(sick|vac) = 10/500 = 0.02; P(sick|no vac) = 50/500 = 0.10.$
View full solution & statsarrow_forward
Sample 2difficulty 3/5
$Aggregated data show treatment A is better than B, but within every patient subgroup, B is better.$
$This phenomenon is called:$
- A
  $Simpson's paradox$
  check_circle
- B
  $Heteroscedasticity$
- C
  $Selection bias$
- D
  $Multicollinearity$
Why
$Simpson's paradox: a trend present in groups can reverse when groups are combined.$
View full solution & statsarrow_forward

Predict my AP scorearrow_forward

auto_awesomeAll Tools question_answerHomework Q&A menu_bookAP & SAT Prep timelineLearn Mode