Bivariate Data

New Zealand

Level 6 - NCEA Level 1

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

b

Ford received the lowest ratings among Males.

True

A

False

B

c

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

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

e

Females prefered the cars that were red.

True

A

False

B

Easy

1min

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?

Easy

2min

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

Easy

3min

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?

Easy

1min

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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