The total income of a household for one year is N60,000. This amount is spent on rent(R), food(F), education for the children(E), general maintenance(G) and miscellaneous items(M).
What is the amount spent on food items

The weights to the nearest kg of a group of students are recorded in the following table

Calculate the mean weight

The scores of students in a class test are given in the table below:

Marks             1     2     3    4    5     6    7    8    9    10
Frequency     0     3     1    2    3     4    2    1     1     0

The modal score is

The table below shows the masses to the nearest kg of a group of market women.

The mode of the distribution is

In a class of 20 students the scores in a Mathematics test out of 10 marks are as follows:
5, 3, 6, 7, 8, 4, 5, 4, 9, 3, 4, 6, 4, 5, 7, 4, 5, 6, 7, 2

The range of the distribution is

Find the mean and  mean deviation, respectively of the following 
5, -3, 6, -2, 4, -8, 4, 7, -10, 10

The diagram illustrates the distribution of marks in a class test



The average and the modal marks scored are, respectively

Find the mean and  mean deviation, respectively of the following 
16, 18, 12, 14, 20, 25, 13, 15, 11

For the set of numbers
4, 6, 2, 10, 8,
the difference between the range and the variance is

If x is positive, and the standard deviation of x-1, x+1, 3, 2x-1 and x+3 is 2√2, find the value of x and hence calculate the mean deviation

The following data gives the heights to the nearest metre of 55 trees



Calculate the interquartile range

The average age of 4 children is 15 years. If the ages of their parents are added, the average age is 25.
What is the age of the father if he is 4 years older than his wife?

The heights of eight children are:
1 m, 1.2 m, 0.9 m, 0.8 m, 1.4 m, 0.8 m, 1.2 m and 1.1 m.
The sum of the mean and the range is

Find the variance and the standard deviation, respectively of the data below
5, -3, 6, -2, 4, -8, 4, 7, -10, 10

The scores of a group of students are
4, 5, 6, 7, 8.
The standard deviation is

The distribution of a housewife's expenditure on four food items is as follows:
Item A (£80),    Item B (£45),    Item C (£30),   Item D (£25).
The sum of the angles of the sectors representing the expenditure on items B and D is

The scores of students in a class test are given in the table below:

Marks             1     2     3    4    5     6    7    8    9    10
Frequency     0     3     1    2    3     4    2    1     1     0

The number of students who scored at least 5 is

The following data gives the heights to the nearest metre of 55 trees

Using a working mean of 18 or otherwise , calculate the mean height

The table below shows the weight distribution of a group of potatoes.

Weight(g)             1-5        6-10        11-15        16-20          21-25
No. of potatoes      3             7              5                3                  2

What is the mode of the distribution?

The following are measures of central tendency except

The scores of a class of students in a test are shown below:

Scores                     2        3       4     5      6        7
No. of students      1         3       5     x      4        2

If the average score is 14/3, the value of x is

Four angles of the sectors of a pie are 84°, 72°, 56° and 78°. If the fifth sector represents a population of 1.6 million, what population will the sector with 56° represent?

The following data gives the heights to the nearest metre of 55 trees

Using a working mean of 18 or otherwise, calculate the standard deviation

The following marks were obtained by candidates in an examination 

What percentage of the candidates scored above 70 marks?

The table below shows the heights to the nearest cm of a group of people



Calculate an estimate of the mean