Question: I have tried everything for the second part. I tried square rooting the answer and got 5.4 and it was not correct. Find the sample

I have tried everything for the second part. I tried square rooting the answer and got 5.4 and it was not correct.

Find the sample variance and standard deviation. 19,15,3,9. 12 g Choose the correct answer-below. Fill in the answer box to complete your choice. (Type an integer or a decimal. Round to one decimal place as needed.) @A- .2 = sea _ Choose the correct anSWer below. Fill in the answer box to complete your choice. - (Round to one decimal place as needed.)

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