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1. If a set of 9 numbers has standard deviation 7, then it's variance is: a....

1. If a set of 9 numbers has standard deviation 7, then it's variance is:

a. 49.00

b. 2.33

c. 16.33

d. 21.00

2. Christine is currently taking college astronomy.
On the past seven quizzes, Christine got the following scores:

46 20 33 21 14 48 55
Find the standard deviation of the quiz scores.

a. 16.1

b. 33

c.8024.1

d. 9571

0 0
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Answer #1

Ans- 1 TO Find the variance of given Standard deviation of 9 numbers is 7 he know that variance= (standard deviation) (7) = vxi (xi-x)? 46 147.3796 20 1920996 33 0.7396 al 165-3796 14 48 55 394-4196 199.9396 446-8996 3(2-x) 1546 8572 Standard deviati

Hence the solution...

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