Bivariate Data

A class completed $40$40 questions for homework.

The time needed for boys and girls to finish them was collected, and the data was presented as a parallel dot plot.

a

Comparing boys and girls, which gender had the highest median time?

Girls

A

Both medians are the same.

B

Boys

C

Girls

A

Both medians are the same.

B

Boys

C

b

Which gender had the largest range?

Boys

A

Girls

B

Both ranges are the same.

C

Boys

A

Girls

B

Both ranges are the same.

C

c

Which group has the highest valued mode?

Boys

A

Girls

B

Both modes are the same.

C

Boys

A

Girls

B

Both modes are the same.

C

Easy

Approx 2 minutes

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Plan and conduct surveys and experiments using the statistical enquiry cycle:– determining appropriate variables and measures;– considering sources of variation;– gathering and cleaning data;– using multiple displays, and re-categorising data to find patterns, variations, relationships, and trends in multivariate data sets;– comparing sample distributions visually, using measures of centre, spread, and proportion;– presenting a report of findings

Evaluate statistical investigations or probability activities undertaken by others, including data collection methods, choice of measures, and validity of findings