Use this Statistics and Probability hub to move from data presentation and summary statistics into probability, sets, Venn diagrams and distributions.
Here are the numbers of aces that Rutger served in each of 11 tennis matches.
1, 1, 2, 4, 6, 8, 8, 9, 11, 12, 15
Find the interquartile range of the numbers of aces.
Show your working clearly.
Kim also plays in 11 tennis matches.
For Kim, the median number of aces is 11 and the interquartile range of the numbers of aces is 5.
State, giving a reason, whether Rutger or Kim
served more aces on average,
was more consistent with the number of aces served.
A biased spinner has three sections each of a different colour.
The table shows the probability that, when the spinner is spun once, it will land on blue or on orange or on white.
Work out the value of x
The spinner is spun 250 times.
Work out an estimate for the number of times the spinner will land on blue.
All the students in year 10 and all the students in year 11 named their favourite science subject from Biology, Chemistry and Physics.
The pie chart shows information about the results for the year 10 students.
The table shows information about the results for the year 11 students.
Pie chart for year 10
Table for year 11
There are 300 students in year 10
There are 320 students in year 11
More students in year 10 than in year 11 said Biology was their favourite science subject.
How many more?
ABCDE is a regular pentagon.
DEFGHI is a regular hexagon.
AF is a straight line.
Work out the size of angle EAF
The table shows information about the weights, in kilograms, of 40 babies.
Write down the modal class.
Work out an estimate for the mean weight of the 40 babies. kg
One of the 40 babies is going to be chosen at random.
Find the probability that this baby has a weight of more than 5 kg .