# Z-Scores in Statistics Explained: Formula, Overview Video

Instructions:

question 1 of 3

### Which of the following is not part of the calculation for a z-score

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### 2. If Jan's z-score on an assessment is 3, the population's mean is 15 and the standard deviation is 5, what was Jan's raw score?

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Calculating a z-score provides a way to compare scores on tests that utilize different raw score scales. This quiz and worksheet combination will test your knowledge of z-score calculations and provide sample problems that allow you to practice the skill.

## Quiz & Worksheet Goals

This quiz tests you on the following information:

• Characteristics of a z-score
• Calculating z-scores mathematically
• Practical application of the skill

## Skills Practiced

You will gain practice with these related skills:

• Reading comprehension - ensure that you draw the most important information from the related lesson on calculating z-scores
• Critical thinking - apply relevant concepts to examine information about standardized test scores in a different light
• Problem solving - use acquired knowledge to solve z-score practice problems