Question

Estimate the arithmetic mean of the following data. i)17,25,28,35,40. ii)5,6,7,8,10,10,10,12,12,13,19,19,19,20.

Answer 1

hope this helps..........

Answer 2

Answer:

Arithmetic Mean of a set of values is the ratio of the sum of observation to the total number of values in the data.

i)

The following data is, 17, 25, 28, 35, 40.

Sum of observation = 17+25+28+35+40 =145

Total number of values in the data is, 5

then the arithmetic mean = $\frac{Sum of observation}{total number of value}$ = $\frac{145}{5} = 29$

ii)

The following data is, 5,6,7,8,10,10,10,12,12,13,19,19,19,20

Sum of observation = 5+6+7+8+10+10+10+12+12+13+19+19+19+20 = 170

Total number of values in the data is, 14

then the arithmetic mean = $\frac{Sum of observation}{total number of value}$ = $\frac{170}{14} = 12.1428571$