For a set of data the lower quartile is 19, the median is 31, and the upper quartile is 48. Which value would be an outlier using 1.5 times IQR criteria? A- -13
B- 12
C- 75
D- 96

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers

go on the tube you might find some information there

the answer is 13 cm