PSY 411 Chapter 4 Notes

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6 Terms

1
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**percentile rank**
A score that indicates the percentage of people who scored at or below a given raw score
2
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**standard normal distribution**
A normal distribution with a mean of 0 and a standard deviation of 1
3
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**z score (standard score)**
the number of standard deviations an individual score is from the mean
4
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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.
5
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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
6
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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