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You need to look up z-score tables.

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9y ago
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Q: What is the formula to convert a z score into a percentile rank?
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Related questions

What is the percentile rank if the raw score is 34?

It is not possible to convert a raw score into a percentile without knowing the distribution of scores and key parameters of the distribution. Since none of this information is provided, it is not possible to give a sensible answer.


For the 20 test scores shown find the percentile rank for a score of 86?

75th percentile


A score of -1 standard deviation represents what percentile rank approximately?

approximately 32nd percentile


What percentile rank would represent a person with a z score of 3?

The top percentile (> 99.86%)


Where does 780 fico score rank?

Around the 87th percentile.


Where does 1760 sat score rank nationally?

76 national percentile


What is the percentile rank of the score 20 in a unit normal distribution that has a population mean of 21 and a variance of 4?

It is the 31st percentile.


The wisc IQ test is an example of a percentile rank a raw score a criterion-reference test or a standard score?

standard score


A z-score of -1.0 represents a percentile rank of roughly?

between 15 and 20.


What is percentile rank?

The percentile rank of a score is the percentage of scores in its frequency distribution that are lower than it. For example, a test score that is greater than 75% of the scores of people taking the test is said to be at the 75th percentile.Percentile ranks are commonly used to clarify the interpretation of scores on standardized tests. For the test theory, the percentile rank of a raw score is interpreted as the percentages of examinees in the norm group who scored below the score of interest.[1]Percentile ranks (PRs or "percentiles") are often normally distributed ("bell-shaped") while normal curve equivalents (NCEs) are uniform and rectangular in shape. Percentile ranks are not on an equal-interval scale; that is, the difference between any two scores is not the same between any other two scores whose difference in percentile ranks is the same. For example, 50 − 25 = 25 is not the same distance as 60 − 35 = 25 because of the bell-curve shape of the distribution. Some percentile ranks are closer to some than others. Percentile rank 30 is closer on the bell curve to 40 than it is to 20.The mathematical formula iswhere cfℓ is the cumulative frequency for all scores lower than the score of interest, ƒi is the frequency of the score of interest, and N is the number of examinees in the sample. If the distribution is normallydistributed, the percentile rank can be inferred from the standard score.


How does a 783 credit score rank?

783 credit score ranks as excellent and is in the top 10 percentile. Rankings go from 330 to 830.


What must your IQ be to get into mensa?

Your IQ must rank you at the 98th percentile. That translates to a score of around 132.