## Question

###### Calculate the range, variance, and standard deviation of the following data set: 5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20 (Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14; Standard D

20. Calculate the range, variance, and standard deviation of the following data set:

5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20

(Points: 5)

Range = 15; Variance = 225; Standard Deviation = 7.5

Range = 3.85; Variance = 14; Standard Deviation = 3.74

Range = 20; Variance = 15; Standard Deviation = 4

Range = 15; Variance = 14.82; Standard Deviation = 3.85

5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20

(Points: 5)

Range = 15; Variance = 225; Standard Deviation = 7.5

Range = 3.85; Variance = 14; Standard Deviation = 3.74

Range = 20; Variance = 15; Standard Deviation = 4

Range = 15; Variance = 14.82; Standard Deviation = 3.85

## Answers

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

2y^3(3y+1)

Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

Range = highest score - lowest

I'll let you do the calculations.

factor 6y^4+2y^3

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