Mean and Standard Deviation vs Median and IQR

What is the sample standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

Which data set has the largest standard deviation?

• Set 1

• Set 2

• Set 3

• Set 4

What is the sample standard deviation for the data given:

{12, 13, 29, 18, 61, 35, 21}

• 293.67

• 15.87

• 17.14

• 41.98

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Michael has taken 12 tests in his math class. His lowest test score was 78. His highest test score was 98. On the 13th test, he earned a 64. Which of the following effects are certain to occur to the standard deviation, mean, and median of Michael's test scores when the last score is added?

• The standard deviation, median, and mean all decrease.

• The standard deviation increases, mean decreases, and median cannot be determined.

• The standard deviation increases, and mean and median decrease.

• The standard deviation cannot be determined, and mean and median decrease.

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean

• Median

• Mode

• Range

The term "snowstorms of note" applies to all snowfalls over 6 inches. The snowfall amounts for snowstorms of note in Utica, New York, over a four-year period are as follows: 7.1, 9.2, 8.0, 6.1, 14.4, 8.5, 6.1, 6.8, 7.7, 21.5, 6.7, 9.0, 8.4, 7.0, 11.5, 14.1, 9.5, 8.6 What are the mean and SAMPLE standard deviation for these data, to the nearest hundredth?

• mean = 9.46; standard deviation = 3.74

• mean = 9.46; standard deviation = 3.85

• mean = 9.45; standard deviation = 3.74

• mean = 9.45; standard deviation = 3.85

Given a variance of 64, what is the standard deviation?

• 8

• 4096

• 0

• 6.8

Which of the following is a measure of variability?

• mean

• median

• mode

• standard deviation

What is the mean?

• happening the most

• the number in the middle

• biggest-smallest

• the average