Z-Scores in Statistics Explained: Formula, Overview Video

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

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

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1. On an intelligence test with a mean of 100 and a standard deviation of 15, Jamie scored 85. What is Jamie's z-score?

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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About This Quiz & Worksheet

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

Additional Learning

Read the lesson titled Z-Scores in Statistics Explained: Formula, Overview to learn more about this subject. This lesson covers the following objectives:

  • Discuss the importance of standardization when comparing test scores
  • Provide the mathematical formula for z-score calculation
  • Explain the role of 'normal distribution' when making assumptions about test scores
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