Unit 6 Review

#1 - Find the interquartile range for the data set:

3, 3, 4, 5, 11, 13, 20, 21, 26, 27

• 4

• 21

• 17

• 24

The table shows the amount of accumulated snowfall during different months. What is the range of the data?

• 19.16

• 15.03

• 13.1

• 14.96

#3 - If a data set has many outliers, which measure of central tendency would be the BEST to use?

• mean

• median

• mode

• IQR

#4 - Peter went bowling, Monday to Friday, two weeks in a row. He only bowled one game each day he went. He kept track of his scores below.

Week 1: 70, 70, 70, 73, 75

Week 2: 72, 64, 73, 73, 75

What is the BEST explanation of why Peter’s Week 2 mean score was lower than his Week 1 mean score?

• Peter had one very high score in Week 1.

• Peter received the same score three times in Week 1.

• Peter had one very low score in Week 2.

• Peter did not beat his high score from Week 1 in Week 2.

#5 What percent of the data values are between 20 and 55?

• 25%

• 20%

• 75%

• 55%

#6 -

• 36

• 25

• 9

• 4

#7 -

• 25%

• 50%

• 75%

• 100%

• 1

• 2

• 3

• 4

#9 - Consider the following scores:

12, 56, 62, 66, 74, 83, 88, 90, 93, 96

If the outlier, 12, is removed from the set above, what is the approximate increase in the median of the remaining scores?

• 78.5

• 83

• 12

• 4.5

#10 -

• 35

• 30

• 40

• 25