PSY 411 Chapter 4 Notes
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6 Terms
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**percentile rank**
A score that indicates the percentage of people who scored at or below a given raw score
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**standard normal distribution**
A normal distribution with a mean of 0 and a standard deviation of 1
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**z score (standard score)**
the number of standard deviations an individual score is from the mean
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**Standardization**
The process of putting different variables on the same scale to compare them. to standardize variables, you calculate the mean and standard deviation.
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**Understand the unique properties of the normal curve and we can use the normal distribution as a tool**
Symmetrical, bell-shaped frequency polygon, normal distribution mean = median = mode
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**Describe what a percentile rank is**
A score that indicates the percentage of people who scored at or below a given raw score
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