Question

Find the arithmetic mean of the following
5, 10, 15, 20, 25, 30, 35, 40​

Answer 1

Explanation:

Mean :

step 1 Address the formula, input parameters & values.

Formula:

µ =

n

∑

i = 0

Xi

n

Input parameters & values

x1 = 5; x2 = 10, . . . . , x10 = 50

number of elements n = 10

Find sample or population mean for 5, 10, 15, 20, 25, 30, 35, 40, 45 & 50

step 2 Find the sum for dataset 5, 10, 15, 20, 25, . . . . , 45 & 50

µ =

n

∑

i = 0

Xi

n

= (5 + 10 + 15 + . . . . + 50)

10

step 3 Divide the sum by number of elements of sample or population

= 275

10

= 27.5

Mean (5, 10, 15, 20, 25, . . . . , 45, 50) = 27.5