What is the standard score of a raw score of 30 from a set of 20 scores where the mean is 15 and the standard deviation is 5?

Name: What is the standard score of a raw score of 30 from a set of 20 scores where the mean is 15 and the standard deviation is 5?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

To find the standard 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:

z = (30 - 15) / 5 = 3

Therefore, the standard score for a raw score of 30 is 3.

What Is the Standard Score of a Raw Score of 30