Box Plots and Interquartile Range

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Box Plots and Interquartile Range — Free MYP1 Mathematics Practice Questions

1QuestionDrawing Box Plots from Data SetsConcept Practice

2 marks~3 minCriterion A

The box plot below shows the test scores of a class.

Identify the median score shown on the box plot. [1]

Describe what the median tells you about the class's test scores. [1]

Solutions

2QuestionComparing Data Sets Using Box PlotsConcept Practice

2 marks~3 minCriterion C

Two Year 7 classes took the same test. Their results are shown in the box plots below.

Class A	minimum 40	$Q_1$ = 55	median = 65	$Q_3$ = 75	maximum 95
Class B	minimum 50	$Q_1$ = 60	median = 70	$Q_3$ = 80	maximum 90

Identify one way a teacher could use these box plots to compare the two classes. [1]

Describe one thing the box plots do not tell the teacher about the students' scores. [1]

Solutions

3QuestionComparing Data Sets Using Box PlotsConcept Practice

2 marks~3 minCriterion A

The box plots below show the test scores for Class A and Class B.

Class A	minimum 40	lower quartile 55	median 65	upper quartile 75	maximum 90
Class B	minimum 35	lower quartile 50	median 60	upper quartile 70	maximum 85

State the median score for each class. [1]

Identify which class has the higher median score and give its value. [1]

Solutions

4QuestionCalculating and Interpreting the Interquartile RangeConcept Practice

2 marks~3 minCriterion B

Here are two sets of numbers:

Set A	2	4	6	8	10
Set B	2	4	6	8	16

Calculate the interquartile range (IQR) for Set B. [1]

Describe what happens to the IQR when the largest value increases. [1]

Solutions

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