Statistics questions | form three Basic Mathematics

In a mathematics test the following marks were obtained:
27, 57, 57, 40, 70, 48, 59, 60, 42, 44, 47, 44, 44, 59, 35, 48, 43, 52, 36, 48
(a) Group the marks in class intervals 20 – 29, 30 – 39, etc. and then construct the
frequency distribution table.
(b) Draw the histogram for the distribution.

Answer / Solution

UNSOLVED

Carefully study the frequency distribution table which shows the marks of 100 students in a Physics examination.

Calculate
(a) the mean given the assumed mean is 75.5,
(b) the median in two decimal places,
(c) the mode in two decimal places.

Answer / Solution

UNSOLVED

Mode , median and mean are the measures of central tendency of a distribution. Give a description of each term.

Answer / Solution

UNSOLVED

The following frequency distribution table shows the marks of 100 students in an end of term Mathematics examination.

1. How many students had less than 71 marks?
2. How many students had at least 41 marks?
3. Determin the modal and the median classes.
4. Determine an estimate mean of the marks.
5. Draw a cumulative frequency curve of the marks.
6. Estimate the median examination mark from the graph.

Answer / Solution

UNSOLVED

The following distribution table shows the scores of 64 students in a Chemistry weekly test.

1. Calculate the mean and mode.
2. Draw the ogive and use it to estimate the median.

Answer / Solution

UNSOLVED