Statistics questions | form three Basic Mathematics

A survey of 50 families whowed the number of children per family as follows:

1. Write down the modal number of children per family
2. Find the median number of children per family
3. Calculate the mean number of children per family.

Answer / Solution

UNSOLVED

The pie-chart below shows the number of students in one examination centre in different subjects sat for the national examinations.

Given that 220 candidates did History ; find :

1. The total number of candidates at this examination centre.
2. The number of students who sat for civics examination.

Answer / Solution

UNSOLVED

The data below shows test scores of a certain class in mathematics:

21 21 21 22 22 22 22 23 23 24 24 24 21 24 24 25 26 27 27 27.

Construct a frequency distribution table showing scores x and frequency f.

Answer / Solution

UNSOLVED

The table below shows the distribution of 100 shops and their profit per shop in a certain month.

1. Find the value of C.
2. Prepare the frequency distribution and use it to determine the modal class.
3. Draw a histogram and frequency polygon on the same diagram.

Answer / Solution

UNSOLVED

A random sample of 100 students was chosen from a school. Each student`s blood pressure was measured to the nearest millimetres of mercury as shown in the table below:

1. Calculate the mean and mode of blood pressure
2. Construct a cumulative frequency table and draw the ogive, from the ogive estimate

1. The median blood pressure
2. The percentage of students with blood pressure between 67 mmHg and 76 mmHg.

Answer / Solution

UNSOLVED