The numbers of visitors every hour in a shop from 1p.m. to 8p.m. on Monday were recorded as 7,10,15,22,6,4, and 13. The arithmetic mean of visitors is:
- A13
- B9
- C10
- D11
Solution & Step-by-step Explanation
The arithmetic mean is calculated by dividing the sum of all observations by the total number of observations.
Count the number of observations (n):
There are 7 observations recorded.
Calculate the total sum of visitors:
Sum=7+10+15+22+6+4+13=77
Calculate the arithmetic mean:
Mean=
n
Sum
=
7
77
=11
Therefore, the arithmetic mean of the visitors is 11.
Count the number of observations (n):
There are 7 observations recorded.
Calculate the total sum of visitors:
Sum=7+10+15+22+6+4+13=77
Calculate the arithmetic mean:
Mean=
n
Sum
=
7
77
=11
Therefore, the arithmetic mean of the visitors is 11.