Y8 Numeracy Skills SP7/8

L3

Martine bought a ham sandwich and a muesli bar for lunch from the canteen. What other item could she buy with the change she gets from $5.00?

• Orange or apple

• Fruit juice

• Muesli bar

• Salad sandwich

L3

The number of people moving out of a country town over 4 years is shown below. The total number of people who have moved over the years is:

• 15 000

• 20 000

• 22 000

• 25 000

L4

A survey was taken last year. Students could choose only one of the sports each 3-month period. How many more students chose swimming in the summer/autumn than football in the winter?

L4

The sector graph shows the make-up of 300 people on a cruise. Which is the best estimate for the number of women on the cruise?

• 70

• 90

• 110

• 130

L4

Fifty students were surveyed about part-time jobs.

· 21 mowed lawns

· 25 babysat

· 11 did not have a part-time job

The diagram is missing some information.

How many students both mowed lawns and babysat?

L5

This sector graph was drawn to show the results when 60 people were asked what their favourite type of movie was. How many people chose sci-fi movies?

L5

The graph shows the cost of certain holiday tours and their length (in days). Which two tours can be used to show that 'the higher the cost the longer the tour' is not always correct?

• P and T

• R and S

• S and P

• R and Q

L5

The average (mean) of six numbers is 4. When one of the numbers is left out the average changes to 3. What number is left out?

• 3

• 4

• 7

• 9

L6

Ten critics judges a new film as a score out of 10 and the results are listed:

5 5 6 6 7 7 7 8 9 10

Which of the following is true?

• A) Mean = Mode > Median

• A) Mean = Mode = Median

• A) Mean < Mode < Median

• A) Mean < Mode = Median

L6

The stem and leaf plot shows the mass (in kilograms of a number of students).

The mass of another student is included in the stem and leaf plot. If the mass is 44kg, what effect does it have on the mean and mode?

• Mean decreases and Mode decreases

• Mean increases and Mode is unchanged

• Mean decreases and Mode is unchanged

• Mean decreases and Mode increases