Question

You scored 200 on a test. The class average was 150 with a standard deviation of 25. What’s your z-score?

Answer 1

Step-by-step explanation:

2= (x – μ) / σ

The test has a mean (μ) of 150 and a standard deviation (σ) of 25. Assuming a normal distribution, your z score would be: z = (x – μ) / σ = (190 – 150) / 25 = 1.6.