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Z-Score Worksheet

This document appears to be a quiz on z-scores and normal distributions. It contains two questions - the first asks students to calculate z-scores for values given the mean and standard deviation of a normal distribution, and the second asks students to find a percentile value and probability given additional information about the mean and standard deviation of another normal distribution. The document provides spaces for students to write their answers.

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Adriel Marasigan
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654 views1 page

Z-Score Worksheet

This document appears to be a quiz on z-scores and normal distributions. It contains two questions - the first asks students to calculate z-scores for values given the mean and standard deviation of a normal distribution, and the second asks students to find a percentile value and probability given additional information about the mean and standard deviation of another normal distribution. The document provides spaces for students to write their answers.

Uploaded by

Adriel Marasigan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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Name _____________________________ Date ________

Course ____________________________ Score _______


QUIZ NO. 1
Z-Score Practice

1. A normal distribution of scores has a mean of 30 standard deviation of 10. Find the z-scores
corresponding to each of the following values:
a) X = 20

b) X = 50

2. The Welcher Adult Intelligence Test Scale is composed of a number of subtests. On one subtest, the
raw scores have a mean of 35 and a standard deviation of 6. Assuming these raw scores form a
normal distribution:
a) What number represents the 65th percentile (what number separates the lower 65% of the
distribution)?

b) What is the probability of getting a raw score between 28 and 38?

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