To be able to calculate the mean, you have to add the numbers together and then divide the total by the amount of numbers. The formula is: Mean=sum of numbers/amount of numbers.
Example question :- A cafe recorded the sale number of Americano coffee. These results are displayed in categories shown below : AMERICANO: Men 17,Women 15,Students 3,Pensioners 5 From these results, can you work out the mean number of sales for Americano Coffee ? Answer: To work out this question ,first we need to add up each category of consumers Men+Women+Students+Pensioners=40 We then divide this total with the total number of categories to give us the mean Therefore Mean= 40/4 =10