APCSP PRACTICE TEST COMPREHENSIVE STUDY GUIDE 2026

AP STATISTICS UPDATED 3 PRACTICE
QUESTIONS WITH DETAILED EXPLANATIONS
2026

◉ μ.
Answer: Population Mean


◉ σ.
Answer: Population Standard Deviation


◉ β.
Answer: Population Slope or P(type II error)


◉ α.
Answer: Significance Level or P(type I error)


◉ x̅ . A
nswer: Sample Mean


◉ n.
Answer: Sample Size

,◉ N.
Answer: Population Size


◉ p̂ . A
nswer: Sample Proportion


◉ t* or z*.
Answer: Critical Value


◉ t* =.
Answer: invt(area to left, df)


◉ z* =.
Answer: invnorm(area to left, df)


◉ SOCS.
Answer: Comparing or Describing Distributions


◉ FODS.
Answer: Describing Scatterplots

, ◉ Regression Model
( logx , y ).
Answer: Logarithmic Model


◉ Regression Model
( logx , logy ).
Answer: Power Model


◉ Regression Model
( x , logy ).
Answer: Exponential Model


◉ r.
Answer: Correlation Coefficient


◉ r squared.
Answer: Coefficient of determination


◉ r squared interpretation.
Answer: ____% of the variation in y can be explained by its linear
relationship with x.