9.
Here are the test marks of 6 girls and 4 boys.
Girls:
5
3
10
2
7
3
Boys:
2
5
9
3
(a) Write down the mode of the 10 marks.
……………………………
(1)
(b) Work out the median mark of the boys.
……………………
(2)
(c) Work out the range of the girls’ marks.
……………………
(1)
(d) Work out the mean mark of all 10 students.
……………………
(2)
(Total 6 marks)
10. Here are ten numbers.
7
6
8
4
5
9
7
3
6
7
(a) Work out the range.
.....................................
(2)
(b) Work out the mean.
.....................................
(2)
(Total 4 marks)