What can you tell about the mean of each

Dividing the sum by the number of items to find the mean. ... The formula to find the sample mean is: = ( Σ xi ) / n. All that formula is saying is add up all of the numbers in your data set ( Σ means “add up” and xi means “all the numbers in the data set).

I feel bad because I think maybe you forgot to put the picture, So here’s the definition of mean