Question

An automotive service company has franchises in two different parts of the city. The number of oil changes made daily, for 25 days, is given below. Complete parts a) through f) below. 31,56,29,39,23,43,27,17,33,40,29,62,40,48,46,20,26,49,43,46

a. What is the mean number of oil changes made daily?
b. What is the median number of oil changes made daily?

Answer 1

The mean number of daily oil changes is 39.1. The median number of daily oil changes is 39.5.

Step-by-step explanation:

a. Mean:

To find the mean, sum all the given numbers and divide by the total count: (31+56+29+39+23+43+27+17+33+40+29+62+40+48+46+20+26+49+43+46)/20 = 39.1

b. Median:

To find the median, first arrange the numbers in ascending order: 17, 20, 23, 26, 27, 29, 29, 31, 33, 39, 40, 40, 43, 43, 46, 46, 48, 49, 56, 62. The median is the middle value, which in this case is the average of the two middle values: (39 + 40)/2 = 39.5