Question

The following question refers to the data in the excel sheet showing 2015 GDP per
capita and fertilty rates for different countries in the world.
a) (i) Make a cumulative percentage graph of GDP per capita using classes of
ten thousand points, starting with 1-10000.
[5 marks]
(ii) State the range of the GDP per capita values of countries that are below the
25th percentile?
[2 marks]
(iii) State the range of the GDP per capita values of countries that above the
75th percentile?
[2 marks]
(iv) What is the mean GDP per capita value?
[1 mark]
1

Answer 1

(i) The frequency distribution table is as follows:

The cumulative percentage graph is as follows:

(ii) Compute the 25^th percentage of the data as follows:

The range of values below the 25^th percentile is (1 – 3785.25).

(iii) Compute the 75^th percentage of the data as follows:

The range of values that above the 75th percentile is (25493.50 – 148374.00).

(iv) Compute the mean of the data as follows:

The mean GDP per capita value is 18393.53.