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3 Cards in this Set
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Standard Deviation (S or small sigma) |
A measure of the dispersion of a set of data from its mean. The more spread apart the data,the higher the deviation. Standard deviation is calculated as the square root of variance. |
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Mean |
Average - the sum of all the data points divided by the number of data points. |
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Null hypothesis |
Is a statement that a researcher wants to reject because it proposes that there will be no change in behavior,no difference between the groups being measured. A negative twist on a research hypothesis. |
