A sample of size 25 provides a sample variance of 400.The standard error,in this case equal to 4,is best described as the estimate of the standard deviation of means calculated from samples of size 25.

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Quizplus · Accepted Answer

The standard error is the estimate of the standard deviation of means calculated from samples. In this case, the sample size is 25 and the sample variance is 400, which gives a standard deviation of 20. The standard error is then calculated by dividing the standard deviation by the square root of the sample size, which gives 20/√25 = 4. Therefore, the statement is true.

A Sample of Size 25 Provides a Sample Variance of 400.The