Why are z scores important
[DOCX File]Mrs.Jayaraman's weebly
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Ask why one z-score is positive and one is negative. If students used a positive z-score for the last question on the activity sheet, go back and address this now. Have students look at the data and determine how many z-scores would be positive and how many would be negative. Have them explain why this makes sense.
[DOCX File]Minnesota State University Moorhead
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Explain in their own words what a z-score is and why it is important. A distribution of scores has a standard deviation of 10. Find the z-scores corresponding to the following values: A score that is 20 points below the mean . A score that is 15 points above the mean . A set of mathematics exam scores has a mean of 70 and a standard deviation of 8.
[DOC File]Lesson Title - VDOE
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The z-score is as important of a concept as the value we are trying to find and the connection between the two is critical; this is not just an academic exercise. It is common to use this type of communication when using statistics.
Z-Score Definition
Using z-scores allows us to standardize scores so that we can compare them across populations that have different means and standard deviations. (As long as they follow the normal (bell-shaped) distribution.)
[DOC File]Introduction to the Practice of Statistics
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Standard scores are universally understood units of measurement in testing and allow us to evaluate how well an individual did on a test in comparison with others. We transform raw scores into standard scores to make comparisons. The most popular transformations are percentages, z scores, standard deviation units, T scores, and percentiles
[DOCX File]learningcenter.unt.edu
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Psy 230 Z-Scores (G&W Ch. 5) I. z-scores and location in a distribution. A. What is a z-score? - standardize a distribution uses mean and st. dev. to produce a number - Sign (+ or -) indicates above or below mean - number gives distance from mean in st. dev. units - Thus, a score that is located two standard deviations above the mean will have ...
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