Standard Deviation

Question 1

She did not find the correct difference of 89 – 78. She divided by 5 instead of 4.✔ She put the negative sign for the 32 outside the parentheses.She forgot to take the square root of –135.6.

Revolt · Accepted Answer

C: ✔ She put the negative sign for the 32 outside the parentheses.

Question 2

Question 2

Revolt · Accepted Answer

86921

Question 3

Which statements are true about the data sets? Check all that apply.

Revolt · Accepted Answer

B: Set B has the same mean and median.; D: Set A is left skewed.; E: The median of set A is larger than the mean of set A.

Question 4

Which statements are true about the curve? Check all that apply.

Revolt · Accepted Answer

B: The variance of the data is 49.; C: The median is 64.; E: The data point 50 is two standard deviations away from the mean.

Question 5

Which statement is most likely to be true?

Revolt · Accepted Answer

B: The scores from Mrs. Rijo’s class are the closest to the class mean.

Question 6

8.40✔ 8.458.829.00

Revolt · Accepted Answer

B: ✔ 8.45

Question 7

Adimas found the mean of her 11 math test scores for the first semester.

Revolt · Accepted Answer

σ2 =: 71.36; σ =: 8.45

Question 8

Adimas found the mean of her 11 math test scores for the first semester.

Revolt · Accepted Answer

B: ✔ 71.36

Standard Deviation Answers

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