Finding Measures of Center and Five Number Summary

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?

• 127

• 155

• 156

• 193

What is the Q1 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 1

• 1.5

• 2

• 2.5

The table lists five counties with the largest area in Texas. Which measure of center/variation best represents the average size of these counties?

• mean

• IQR

• mode

• range

A measure of center, found by ordering the values from least to greatest and determining the middle number

Answer: ​ (a)  

• box plot

• center

• dot plot

• histogram

• interquartile range

• median

• mean

• shape

• spread

• stem-and-leaf

Read the definition and match each word to the correct box.

• Mode

• Measure of center that lies in the middle of a set of data arranged in order

• Median

• Measure of center that occurs most often in a data set.

• Range

• Measure of variation that represents the spread of a set of data.

• Mean

• Measure of center that represents the fair share of a set of data.

The frequency table shows the gas mileages of several vehicles. The data would be ​ (a)   so the best measure of center would be the ​ (b)   and the best measure of variation would be the ​ (c)   ​ ​

• Skewed Right

• median

• Interquartile Range

• Skewed Left

• Symmetrical

• Mean

• Mean Absolute Deviation

To find the average of a set of numbers, add up all the items and divide by...

• 2

• The minimum

• The maximum

• The number of items

What is the Q3 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 5

• 6

• 5.5

• 6.5

What is the minimum of the data set: 2, 7, 8, 3, 9, 8, 12

• 3

• 2

• 12

• 0

What is the median (2nd Quartile) of this data set:

2, 7, 8, 3, 9, 8, 12

• 3

• 8

• 9

• none