Given the following values, the z-score is: Raw score = 55
Mean = 50
Standard deviation = 5
A)+ 1.0
B)+ 5.0
C)+ .10
D)- 1.0

Question

Quizplus · Accepted Answer

To calculate the z-score, we use the formula:
z = (x - μ) / σ
where x is the raw score, μ is the mean, and σ is the standard deviation.

Plugging in the values given:
z = (55 - 50) / 5
z = 1

Since the z-score is positive (+1.0), the answer is A) +1.0.

Given the Following Values, the Z-Score Is: Raw Score =