NZ Level 5
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Comparing Sets of Data II (includes box and whisker)

Interactive practice questions

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
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Approx a minute
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The residents of two blocks of townhouses were asked the number of pets they own. The frequency of various responses are presented in the dot plots.

According to the data, which of the following statements are true?

Marge grows two different types of bean plants. She records the number of beans that she picks from each plant for $10$10 days. Her records show:

Plant $A$A: $10,4,4,5,7,10,3,3,9,10$10,4,4,5,7,10,3,3,9,10

Plant $B$B: $8,7,5,5,9,7,8,7,5,6$8,7,5,5,9,7,8,7,5,6

The stem and leaf plots on the right show the amount of cash (in dollars) carried by a random sample of teenage boys and girls.

Which of the following statements are true?

Outcomes

S5-1

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

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