Interactive practice questions
The mean income of people in Canada is $\$43000$$43000. This is the same as the mean income of people in Germany. The standard deviation of Canada is greater than the standard deviation of Germany. In which country is there likely to be the greatest difference between the incomes of the rich and poor?
Canada
Germany
Two machines $A$A and $B$B are producing chocolate bars with the following mean and standard deviation for the weight of the bars.
Two friends compete in triple jump and the distance of $20$20 jumps were recorded. The mean and standard deviation for the jumps are shown below.
Two friends compete in $100$100 m sprints and the time to complete $50$50 sprints were recorded. The mean and standard deviation for the sprints are shown below.