Bivariate Data

The box plots show the monthly profits (in thousands of dollars) of two derivatives traders over a year.

Ned |
5 10 15 20 25 30 35 40 45 50 55 60 |

Tobias |
5 10 15 20 25 30 35 40 45 50 55 60 |

a

Who made a higher median monthly profit?

Ned

A

Tobias

B

Ned

A

Tobias

B

b

Whose profits had a higher interquartile range?

Tobias

A

Ned

B

Tobias

A

Ned

B

c

Whose profits had a higher range?

Ned

A

Tobias

B

Ned

A

Tobias

B

d

How much more did Ned make in his most profitable month than Tobias did in his most profitable month?

Easy

Approx 2 minutes

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Plan and conduct investigations using the statistical enquiry cycle: A justifying the variables and measures used B managing sources of variation, including through the use of random sampling C identifying and communicating features in context (trends, relationships between variables, and differences within and between distributions), using multiple displays D making informal inferences about populations from sample data E justifying findings, using displays and measures.

Investigate a given multivariate data set using the statistical enquiry cycle

Investigate bivariate numerical data using the statistical enquiry cycle