Review Unit

Find the Mean. 

• 53.5

• 48

• 49

• 48.6

Find the Median.

• 53

• 47

• 49

• 51

Find the mean of the countries' total research and development spending.

• 21.86 billion

• 218.6 billion

• 3.5 billion

• 79.1 billion

Four data sets are shown below. Set 1: {1, 50, 100} Set 2: {45, 50, 55} Set 3: {50, 51, 53} Set 4: {10, 45, 70} At first glance, which data set has the largest standard deviation?

• Set 1

• Set 2

• Set 3

• Set 4

• A
• B
• C
• D

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1

• 2

• 3

• 4

What is the standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

If you transform the data by dividing by 2 what new values apply?

• Mean: 8 Median: 19 Mode: 17 Range: 12

• Mean: 8 Median: 9.5 Mode: 8.5 Range: 6

• Mean: 8 Median: 9.5 Mode: 8.5 Range: 12

• Mean: 16 Median: 19 Mode: 17 Range: 12

  No change

What is the interquartile range (IQR)?

• 4

• 64

• 60

• 8

Find the outlier of the data set.

• no outlier

• 35

• 13

• 15