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Can someone show me how to do this?

Can someone show me how to do this?-example-1
User Zoonman
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1 Answer

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Hope it helps.

Answer:

2.6

Explanation:

To calculate the variance of a data set, we need to first find the mean (average) of the data set.

Mean = (7 + 3 + 9 + 5 + 7 + 5 + 6) / 7 = 6

Next, we need to subtract the mean from each data point and square the result:

(7 - 6)^2 = 1

(3 - 6)^2 = 9

(9 - 6)^2 = 9

(5 - 6)^2 = 1

(7 - 6)^2 = 1

(5 - 6)^2 = 1

(6 - 6)^2 = 0

Then, we need to find the average of these squared differences:

(1 + 9 + 9 + 1 + 1 + 1 + 0) / 7 = 2.57 (rounded to the nearest tenth)

Therefore, the variance of the data set is approximately 2.6.

User Nlern
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