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Statistics, NAP-B2-39 SA

32 students are shown 5 colours and they choose their favourite.

The fractions in the graph below show how the students voted.

How many more students voted for green than blue?
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`4`

Show Worked Solution
`text(Votes for green)` `=1/4 xx 32`
  `=8`
   
`text(Votes for blue)` `=1/8 xx 32`
  `=4`

 

`:.\ text(4 more students voted for green than blue.)`

Statistics, NAP-C2-21

Renee made a pie graph of the cost of things she paid for using her credit card over a month.
 

  
Which information can be found using this pie graph?

The amount of money she spent using her credit card

 
 for going to the cinemas in the month.
 
 on electricity each week.
 
 on shopping each day.
 
 on rent for the month.
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`text(on rent for the month.)`

Show Worked Solution

`text(S)text(ince the pie chart is for payments over a full)`

`text(month, the only information in the options that)`

`text(can be found is on rent for the month.)`

Statistics, NAP-E2-32 SA

Matt and Libby planted 50 trees each over 3 weeks.

The bar chart below shows the amount of trees each planted in each week.
 

How many more trees did Libby plant than Matt in Week 2.
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`5`

Show Worked Solution

`text(Trees planted by Matt in Week 2)`

`= 35 – 15`

`= 20`
 

`text(Trees planted by Libby in Week 2)`

`= 45 – 20`

`= 25`
 

`:.\ text(Libby planted 5 more trees than Matt in Week 2.)`