Bivariate Data

NZ Level 6 (NZC) Level 1 (NCEA)

Create and Interpret Parallel Dot Plots

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 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