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# Find the z-score for the value 62, when the mean is 79 and the standard deviation is 4.

**Solution:**

A z-score measures exactly how many standard deviations above or below the mean data point is.

The formula to find z-score is given by

z = (data point - mean)/standard deviation

Some important facts about z-score,

- A positive z-score says that the data point is above average
- A negative z-score says that the data point is below average
- A z-score close to zero says that the data point is close to average
- A data point is considered unusual if its z-score is above 3 or below -3.

Given,

Mean, μ = 79

Standard deviation, 𝜎 = 4

Data point, x = 62

We know, z = (x - μ)/𝜎

z = (62 - 79)/4

z = -17/4

z = -4.25

Therefore, the z-score value is -4.25

## Find the z-score for the value 62, when the mean is 79 and the standard deviation is 4.

**Summary:**

The z-score for the value 62, when the mean is 79 and the standard deviation is 4 is -4.25

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