The . . . . . . . . of the Chi-squared distribution is twice the degrees of freedom.

The correct answer is: variance.

The variance of a chi-squared distribution is twice the degrees of freedom. This is because the chi-squared distribution is a scaled version of the gamma distribution, and the variance of a gamma distribution is equal to its degrees of freedom multiplied by its scale parameter.

The variance of a random variable is a measure of how spread out its values are. A low variance indicates that the values are clustered close to the mean, while a high variance indicates that the values are spread out over a wider range.

The

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