Data Set

TRUE OR FALSE: When finding the Mean, Standard Deviation, Median, Lowest #, and Highest # on the Calculator you...

1. Hit STAT then ENTER

2. Enter all data values in L1

3. Hit STAT again

4. Arrow over to CALC

5. Choose #1:1 Var Stats, hit ENTER

• TRUE

• FALSE

Which data set has the largest standard deviation?

• Set 1

• Set 2

• Set 3

• Set 4

If the standard deviation of a data set is 4, what is the variance?

• 2

• 16

• 4

What is the Sample Mean for the data given:

• 10.1

• 7.3

• 6.9

• 9.0

What is the sample variance for the data given:

• 47.47

• 102.01

• 52.77

• 81

What is the sample standard deviation for the data given:

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

Round answer to nearest 10th

• 10.1

• 7.3

• 6.9

• 52.8

What is the population variance for the data given:

• 52.77

• 7.26

• 47.49

• 6.89

What is the Population standard deviation for the data given:

• 10.1

• 7.3

• 6.9

• 52.8

What is the population standard deviation for the data given:

• 251.86

• 15.9

• 27

• 189

Answer explanation

Use your calculator or calculator application.

1. Hit STAT then ENTER

2. Enter all data values in L1

3. Hit STAT again

4. Arrow over to CALC

5. Choose #1:1 Var Stats, hit ENTER

6. Scroll down to find the standard deviation (σ)

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 is the mean and population standard deviation for these data, to the tenth?

• mean = 9.46; standard deviation = 3.85

• mean = 9.5; standard deviation = 3.9

• mean = 9.45; standard deviation = 3.74

• mean = 9.45; standard deviation = 3.85