Bivariate Data

NZ Level 6 (NZC) Level 1 (NCEA)

Comparing Sets of Data II (includes box and whisker)

The grouped bar chart shows customer satisfaction ratings for different cars, broken down by gender. The red rows represent males; the blue rows, females.

Which of the following statements are true?

a

Honda received the highest ratings.

True

A

False

B

True

A

False

B

b

Ford received the lowest ratings among Males.

True

A

False

B

True

A

False

B

c

Both genders agree on the rank order in which the cars are rated.

True

A

False

B

True

A

False

B

d

As a group, the women seem to be tougher raters; they gave lower ratings to each car than the men gave.

True

A

False

B

True

A

False

B

e

Females prefered the cars that were red.

True

A

False

B

True

A

False

B

Easy

Approx a minute

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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