Suppose Debbie's sociology teacher calculated z scores for each student on each exam. For the last three exams, Debbie's z scores were 1.00, 1.50, and 2.00. From this information you can conclude that the exam with the largest standard deviation was exam number
A) one
B) two
C) three
D) not determinable from the information given.

Question

Quizplus · Accepted Answer

The z score formula is z = (X - μ) / σ, where X is the score, μ is the mean, and σ is the standard deviation. Without knowing the actual scores (X) or the means (μ) of the exams, we cannot determine which exam had the largest standard deviation solely based on the z scores.

Suppose Debbie's Sociology Teacher Calculated Z Scores for Each Student