Bivariate Data

NZ Level 5

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 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