Measures of Center and Range

What is the mean of the data set below:

4, 6, 8, 3, 1, and 8

• 8

• 7

• 5

• 1

As part of his job at the glass factory, Xavier carefully checks the thickness of glass lenses. He measured the thickness of 5 lenses this afternoon and recorded the following measurements:

6 mm , 5 mm , 3 mm , 5 mm , 4 mm

What is the median thickness?

• 6 mm

• 5 mm

• 4 mm

• 3 mm

The 5 students in Mr. Franklin's class ran a loop around the school. The students' times were:

7 mins, 9 mins, 8 mins, 5 mins, 6 mins

What was the mean time?

• 8 mins

• 7 mins

• 5 mins

• 6 mins

What is the range of the data set below:

7, 8, 4, 0, 8

• 8

• 7

• 4

• 0

A poet filed away the drafts she had written for each of her 9 published poems. The files contained:

1 draft, 5 drafts, 5 drafts, 6 drafts, 5 drafts, 1 draft, 2 drafts, 9 drafts, 1 draft

What was the median number of drafts?

• 1

• 2

• 5

• 6

A florist filled an order for 7 bouquets, each with:

6 flowers, 7 flowers, 7 flowers, 6 flowers, 5 flowers, 8 flowers, 6 flowers

What was the mode of the bouquet sizes?

• 5 flowers

• 7 flowers

• 8 flowers

• 6 flowers

Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Ervin's scores?

• 193

• 127

• 60

• 66

Find the median, mode and range: 
3, 5, 7, 9, 11, 8, 3

• median:7  mode:3  range:7

• median:6  mode:3  range:7

• median:7  mode:3  range:8

The number of miles that Kiki cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Kiki cycled?

• 24

• 36

• 39

• 52

3, 4, 5, 5, 5, 6,7
The mode of these numbers is

• 5

• 10

• 4

• 1