Examlex
The IQ score of the average 20-year-old is 15 points higher than the performance of the average 20-year-old in 1940.This phenomenon is termed the _____effect.
Sample Standard Deviations
A measure that quantifies the amount of variation or dispersion of a set of data values from its sample mean.
Equal Sample Sizes
A condition in statistical analysis where the number of observations in each group being compared is the same.
Confidence Interval
A range of values, derived from the sample statistics, that is likely to contain the value of an unknown population parameter with a certain degree of confidence.
Margin Of Error
An indication of the confidence in the results of a survey or experiment, showing how much the answers may deviate from the true value.
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