What is a Z-score?

How do you find the distance from the given value and the mean?

It Is always the value minus the mean, NOT the mean minus the value.

How do you find the number of standard deviations that would fit into the distance found?

The formula for z-scores is: (mean-given)/standard deviation

How is a z-score used?

The Wechsler IQ test have a mean of 100 with a standard deviation of 15. What is the z-score if the IQ is 121?

The Wechsler IQ test have a mean of 100 with a standard deviation of 15. What is the z-score if the IQ is 100?

The Wechsler IQ test have a mean of 100 with a standard deviation of 15. What is the z-score if the IQ is 72?

The Wechsler IQ test have a mean of 100 with a standard deviation of 15. What is the z-score if the IQ is 140?

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