Calculate variance and standard deviation

Question 1

Find the population standard deviation of 19, 9, 11, 16, 14, 20. Give 2 decimal places.

Answer 

Question 2

Find the variance of 18, 14, 20, 16, 12 (treat them as the whole population).

Answer 

Question 3

Find the population standard deviation of 15, 19, 16, 17, 6, 19. Give 2 decimal places.

Answer 

Question 4

Find the variance of 3, 7, 9, 1, 5 (treat them as the whole population).

Answer 

Question 5

Find the population standard deviation of 14, 14, 13, 1, 16, 5. Give 2 decimal places.

Answer 

Question 6

Find the variance of 22, 16, 18, 24, 20 (treat them as the whole population).

Answer 

Question 7

Find the population standard deviation of 13, 2, 5, 1, 20, 4. Give 2 decimal places.

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Question 8

Find the variance of 21, 17, 20, 23, 19 (treat them as the whole population).

Answer 

Question 9

Find the population standard deviation of 2, 17, 3, 8, 15, 10. Give 2 decimal places.

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Question 10

Find the variance of 19, 21, 25, 23, 27 (treat them as the whole population).

Answer 

Question 11

Find the population standard deviation of 20, 17, 7, 8, 2, 17. Give 2 decimal places.

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Question 12

Find the variance of 24, 24, 25, 26, 26 (treat them as the whole population).

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Question 13

Find the population standard deviation of 14, 13, 19, 13, 8, 6. Give 2 decimal places.

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Question 14

Find the variance of 19, 18, 17, 17, 19 (treat them as the whole population).

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Question 15

Find the population standard deviation of 7, 4, 18, 4, 9, 11. Give 2 decimal places.

Answer 

Question 16

Find the variance of 16, 17, 14, 13, 15 (treat them as the whole population).

Answer