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Mean : We need to add up all the numbers and divide the answer by number of values in the data. Therefore when we add we get = 55/10 = 5.5

Mean = 5.5

Range : We need find the lowest and the highest value of the data and then subtract them to get the range.

Range = 9

Median : We need to put the numbers in order and find the middle value. When we have even values we find the mean of the 2

middle numbers

Median: 5.5

Mean : add up all the numbers and divide the answer by number of values.

Mean = 1500/5 = 300

Variance : Take difference of each value with mean, square the answers and find the average.

Value – mean : 300, -130, 130, 0

Variances (xi-mean)

Standard deviation : We find the square root of the variance

√30950 = 175.9261208575918 = 175.9.