Percentile rank: Indicates the percentage of scores less than or equal to a particular score; is the proportion of scores in a distribution that a specific score is greater than or equal to
Normal curve: A graph resembling a bell-shaped curve
Histogram: A graph that displays the frequency of data
Normal distribution: The frequency distribution of the normal curve
Correlation coefficient: The relationship between two sets of data
Negative correlation: As one variable increases the other decreases, or as one variable decreases the other increases
Positice correlation: As one variable increases so does the other, or as one variable decreases so does the other
R-value: Correlation coefficient
Zero Correlation: The variables have nothing to do with each other, so there is no relation between the two sets of data
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