HELPPP PLEASEEE! I tried everything from adding to dividing, subtracting, multiplying but still no correct answer. Can someone help me out here please? I am not sure where to start either now. Thank you for your time.

You have some data points labeled by . They form the set {3, 5, 7}.

The mean, , is the average of these values:

Then in the column labeled , what you're doing is computing the difference between each data point and the mean :

These are sometimes called "residuals".

In the next column, you square these values:

and the variance of the data is the sum of these so-called "squared residuals".

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step-by-step explanation:

i hope this : )

it’s supposed to be -4+45=41

step-by-step explanation: