The frequency distribution below shows the monthly expenditure on gasoline for a sample of 14 individuals. 
a.Compute the mean.
b.Compute the standard deviation.
Definitions:
West African Countries
Nations located in the western region of the African continent, including Nigeria, Ghana, Senegal, and others.
World Malaria Report
An annual report by the World Health Organization that provides a comprehensive update on the global status of malaria control and elimination.
Reported Malaria Cases
The number of malaria infections that have been diagnosed and documented by health authorities.
West Africa
A region in Africa that is to the west of the continent, comprising several countries including Nigeria, Ghana, and Senegal.
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