CB.Stats.VAR-2.C: Compare measures of relative position in data sets.

Compare measures of relative position in data sets.

Example Problems

Scores on a recent biology test had a mean of

78

points and a standard deviation of

6

points.

The teacher decides to add

4

bonus points to every student's score. What will be the mean of the new scores?

The grades on a Spanish midterm at Northgate are roughly symmetric with

\mu = 88

and

\sigma = 5.0

. Maya scored

81

on the exam.

Find the

z

-score for Maya's exam grade.
Round to two decimal places.

The grades on an AP Statistics test at Loyola are roughly symmetric with

\mu = 77

and

\sigma = 4.0

. Ethan scored

83

on the test.

Find the

z

-score for Ethan's test grade.
Round to two decimal places.

1-on-1 AI tutoring aligned to CB.Stats.VAR-2.C. Instant help for students, real-time insights for teachers.

Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.