Question

20 Luke is an office receptionist.

Each day, for 60 days, he records the number of people visiting the office.
W:
ob
13
Number of people, (n) Frequency
0 20
5 14
10 11
20 15
(a) Calculate an estimate of the mean number of people visiting the office.

Answer 1

The formula for calculating the mean is:

mean = (sum of all values) / (number of values)

In this case, we have the following values:

20, 14, 10, 11, 15

To calculate the sum of all values, we add them up:

20 + 14 + 10 + 11 + 15 = 58

Now, we divide the sum by the number of values:

58 / 5 = 11.6

So, the estimated mean number of people visiting the office is 11.6.

Explanation: