In a set of scores with a mean of 50 and a standard deviation of 5, what raw score is represented by a z-score of 1.00?
A) 30
B) 55
C) 60
D) 20

Question

Quizplus · Accepted Answer

To find the raw score, we can use the formula,
z = (X - μ) / σ
where z is the z-score, X is the raw score, μ is the mean, and σ is the standard deviation.
Substituting the given values, we get
1 = (X - 50) / 5
5 = X - 50
X = 55
Therefore, a raw score of 55 is represented by a z-score of 1.00.

In a Set of Scores with a Mean of 50