Interactive practice questions
Susana attached an energy metre to the household items that use electricity to determine how much each contributes to her quarterly electricity bill.
The results are shown in the Pareto chart.
What was her total quarterly electricity bill?
How much more did the air conditioner cost to run than the oven?
What percentage of the total bill was due to the oven? Round your answer to the nearest whole percentage.
Which single source of electricity cost would Susana need to stop using to reduce her bill by approximately $10%$10%?
Note, $10%$10% is given to the nearest percent.
lighting
water heater
kitchen appliances
air conditioner
A family analysed how much of their net monthly income goes towards various expenses. The Pareto chart shows the results.
The Pareto chart shows the major reasons flights were delayed at an international airport over a one month period.
Bill caught the train and noted what activity each person in his carriage (excluding himself) was doing between the next two stops. The Pareto chart shows the results.