Mean, Median, Range, Iqr

The dot plot below shows the height of the students’ lettuce plant starts. The measurements are in centimeters.

What is the mean height of the plants?

• 1.25 cm

• 1.50 cm

• 2.0 cm

• 2.25 cm

The girls in the 6th grade math class collected data about their shoe sizes. The dot plot below shows the results.

What is the mean shoe size of the girls in the 6th grade math class 15 (rounded the closest actual shoe size)?

• 5

• 6

• 7

• 8

The table below shows how much the Ranger family spent for on-demand movies during the first 10 months of the year. What is the mean charge for this set of data?

• 19.80

• 19.00

• 20.00

• 19.75

The dot plot below shows 29 days of temperatures from Death Valley, California in 2018 measured in Fahrenheit.

What is the median for the set of data?

• 117

• 115

• 116

• 114

What is the interquartile range for the set of data?

• 6.5

• 6

• 7.5

• 7

In PE class the students were running quarter mile laps. They were running at their own pace to get a baseline time to measure progress. The dot plot shows laps run by students. Which statement about the data is true?

• The median is 4 laps & the IQR is 3.5.

• The median is 4 laps & the IQR is 3.

• The median is 4.8 laps & the IQR is 3.5

• The median is 4.8 laps and the IQR is 3

Rory has been keeping track of his video games scores in a table. Which statement about the data is true?

• The median is 1,125 and the range is 1,700 points.

• The median is 1,200 and the range is 1,700 points

• The median is 1,200 and the range is 2,475 points

• The median is 1,725 and the range is 3,675 points

Members of the drama club are getting measured for costumes. The dot plot below shows the height of distribution of the club in inches. Which statement about the data is true?

• The median is 54.5 and the IQR is 2.5"

• The median is 54 and the IQR is 2.5”

• The median is 53.5 and the IQR is 2”

• The median is 55 and the IQR is 3”

Megan has been keeping track of her spelling test scores this grading period. What will Megan’s mean grade be in spelling?

• 84.6%

• 86.1%

• 92.5%

• 95.7%

John’s class was tracking feet of snowfall in Colorado Springs, CO. It snowed 8 months out of the year. What is the median snowfall of the data below?

• 17.5 ft

• 15 ft

• 20 ft

• 10 ft