The table shows the probabilities of scoring a number on a die when rolled 100 times. Estimate how many 2s would be rolled if the die was rolled 500 times.
Which area of maths is needed to answer this question?
Relative frequency
Averages from tables
Tree diagrams
What is the probability of scoring a 2?
0.06
0.12
0.18
Estimate the number of 2s if the die was rolled 500 times.
180
90
60
The table shows the time taken for 64 office workers to travel to work on a Friday. Work out the number of staff members who took less than 18 minutes.
Which topic is maths is most relevant to answering this question?
Box plots
Probability
What percentage of staff travelled to work in 18 minutes or less?
10%
25%
75%
How many staff took 18 minutes or less to travel to work?
16
25
32
40 pupils in a class score a mean mark of 65 in a maths exam. The averages for boys and girls are compared. The 22 girls in the class score a mean mark of 71. What is the mean mark for the boys?
Which information is most important?
The mean of 40 pupils = 65 and mean of 22 girls = 71
The averages for boys and girls will be compared.
There are 22 girls out of 40 in a maths class.
What was the total number of marks scored by the class?
65
2,600
1,850
What was the total number of marks scored by the girls?
1,562
71
983
What was the mean mark of the boys' scores?
56.1 marks (1 dp)
1,038 marks
57.7 marks (1 dp)