Question Library

How many students scored at least 3 marks?

Find the mean deviation of assets of numbers: 14, 15, 16, 17, 18, and 19.

a. The table shows the height of teak trees harvested by a farmer: Find the median height. Height(m) 3 4 5 6 7 8 number of trees 4 6 4 5 6 2 b. calculate and correct to one decimal place the: i. mean; ii. standard deviation.

If the mean of 2, 5, (x+1), (x+2), 7 and 9 is 6. Find the median

The mean of ten positive numbers is 16. When another number is added, the mean becomes 18. Find the eleventh number

find the first quartile of 7,8,7,9,11,8,7,9,6 and 8.

Height(cm) 160 161 162 163 164 165 No. of players 4 6 3 7 8 9 the table shows the height of 37 players of a basketball team calculates correct to one decimal place the mean height of the players.

The pie chart represents the distribution of fruits on display in the shop if there are 60 apples on display how many oranges are there?

The histogram above represents the number of candidates who did Further Mathematics examination in a school. How many candidates scored more than 40?

The pie chart above shows the distribution of marks scored by 200 pupils in a test. (a) How many pupils scored : (i) between 41 and 50 marks? ; (ii) above 80 marks? (b) What fraction of the pupils scored at most 50 marks? (c) What is the modal class?

A student calculated the mean of 5 numbers as 45.3. While rechecking his working, he discovered that his total was short by 20.5. What is the correct mean of the 5 numbers?

Score 1 2 3 4 5 6 7 8 9 Frequency 2 3 6 7 9 6 2 2 3 The table above shows the scores of a group of 40 students in a physics test What is the mean of the distribution?

The histogram below shows the number of candidates, in thousands, obtaining given ranges of marks in a State examination. Find the total number of candidates that sat for the examination