# ANALYZING DOT PLOTS WORKSHEET

## About "Analyzing dot plots worksheet"

Analyzing dot plots worksheet :

Worksheet on analyzing dot plots is much useful to the students who would like to practice problems on dot plots.

## Analyzing dot plots worksheet - Problems

Problem 1 :

People once used body parts for measurements. For example, an inch was the width of a man’s thumb. In the 12th century, King Henry I of England stated that a yard was the distance from his nose to his outstretched arm’s thumb. The dot plot shows the different lengths, in inches, of the “yards” for students in a 7th grade class. Use the dot plot and answer the questions given below. Questions :

1.  Describe the shape of the dot plot. Are the dots evenly distributed or grouped on one side ?

2.  Describe the center of the dot plot. What single dot would best represent the data ?

3.  Describe the spread of the dot plot. Are there any outliers ?

4.  Calculate the mean, median, and range of the data in the dot plot.

Problem 2 :

The dot plot shows the number of letters in the spellings of the 12 months. Use the dot plot to answer the questions given below. Questions :

1.  Describe the shape of the dot plot.

2.  Describe the center of the dot plot.

3.  Describe the spread of the dot plot.

4.  Calculate the mean, median, and range of the data in the dot plot.

## Analyzing dot plots worksheet - Answers

Answers for the questions in problem 1 :

1.  Describe the shape of the dot plot. Are the dots evenly distributed or grouped on one side ?

The dots are fairly evenly spread out with most in the middle.

2.  Describe the center of the dot plot. What single dot would best represent the data ?

The dots are fairly evenly spread out with most in the middle.

3.  Describe the spread of the dot plot. Are there any outliers ?

The data values start at 28 in. and end at 35 in. Most of the data is between 29 in. and 34 in. 28 and 35 do not look like outliers.

4.  Calculate the mean, median, and range of the data in the dot plot.

Mean: about 31.6 in.; median: 31.5 in.; range: 7 in.

Answers for the questions in problem 2 :

1.  Describe the shape of the dot plot.

The dots have a relatively even spread, with a peak at 8 letters.

2.  Describe the center of the dot plot.

The center of the graph is between 6 and 7 letters.

3.  Describe the spread of the dot plot.

The dots spread from 3 to 9 letters.

4.  Calculate the mean, median, and range of the data in the dot plot.

mean ≈ 6.17; median = 6.5; range = 6

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