Examlex
Which of the following statements is true?
Standard Deviation
A measure of the amount of variation or dispersion in a set of values, showing how spread out the data points are from the mean.
Chi-squared Distribution
A statistical distribution that is used to describe the distribution of a sum of squared random variables, often used in hypothesis testing.
Chi-squared Distribution
A statistical distribution that describes the distribution of the sum of the squares of a set of variables that follow a normal distribution, commonly used in hypothesis testing.
Positively Skewed
A distribution shape where the tail is longer on the right side, indicating that the mean and median are greater than the mode.
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