# ANALYZING BOX PLOTS WORKSHEET

## About "Analyzing box plots worksheet"

Analyzing box plots worksheet :

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

## Analyzing box plots worksheet - Problems

Problem 1 :

The number of points a high school basketball player scored during the games he played this season are organized in the box plot shown.

Questions :

1.  Find the least and greatest values.

2.  Find the median and describe what it means for the data.

3.  Find and describe the lower and upper quartiles.

4.  The inter quartile range is the difference between the upper and lower quartiles, which is represented by the length of the box. Find the interquartile range.

5.  Why is one-half of the box wider than the other half of the box ?

Problem 2 :

Maths test scores of a student in several tests are organized in the box plot shown.

Questions :

1.  Find the minimum and maximum scores.

2.  Find the range.

3.  Find the median and describe what it means for the data.

4.  Find and describe the lower and upper quartiles.

5.  The inter quartile range is the difference between the upper and lower quartiles, which is represented by the length of the box. Find the interquartile range.

## Analyzing box plots worksheet - Answers

Answers for the questions in problem 1 :

1.  Find the least and greatest values.

Least value : 15 points ;

Greatest value : 30 points

2.  Find the median and describe what it means for the data.

Median : 21 points; the median, or second quartile,

Q2, divides the data values into two halves, a lower half and an upper half.

3.  Find and describe the lower and upper quartiles.

The lower quartile, Q1, is the median of the lower half. The upper quartile, Q3, is the median of the upper half. Q1 : 17.5 and Q3 : 27.5

4.  The inter quartile range is the difference between the upper and lower quartiles, which is represented by the length of the box. Find the interquartile range.

Q3 - Q1  =  27.5 - 17.5

Q3 - Q1  =  10 points.

5.  Why is one-half of the box wider than the other half of the box ?

The quarter of data to the right of the median is more spread out than the quarter of data to the left of the median.

Answers for the questions in problem 2 :

1.  Find the minimum and maximum scores.

Minimum score : 72 ;

Maximum score : 88

2.  Find the range.

Range  =  88 - 72

Range  =  16

3.  Find the median and describe what it means for the data.

Median : 79 ; the median, or second quartile,

Q2, divides the data values into two halves, a lower half and an upper half.

4.  Find and describe the lower and upper quartiles.

The lower quartile, Q1, is the median of the lower half. The upper quartile, Q3, is the median of the upper half. Q1 : 75 and Q3 : 85

5.  The inter quartile range is the difference between the upper and lower quartiles, which is represented by the length of the box. Find the interquartile range.

Q3 - Q1  =  85 - 75

Q3 - Q1  =  10

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