Using grouped data of 14 classes with a sample mean of 51 and a sample variance of 6.42,calculate the group sampled standard deviation.

Name: Using grouped data of 14 classes with a sample mean of 51 and a sample variance of 6.42,calculate the group sampled standard deviation.
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The Answer of Using grouped data of 14 classes with a sample mean of 51 and a sample variance of 6.42,calculate the group sampled standard deviation.

Using Grouped Data of 14 Classes with a Sample Mean