Respuesta :
The first step in calculating the mean is to add the numbers. After that you divide by the number of items in the data set. You don’t need to group the numbers to find the mean. Hope this helped!
1º - To find a mean you'll have to add the all the data you have together.
2º - After that you'll divide your answer by the number of numbers that where summed to obtain the final answer.
Hope it helped,
Happy homework/ study/ exam!