MATH 1040 - Introduction to Statistics

Practice Question 9.2.2

You have a large bag of colored marbles. You randomly grab a handful of marbles and count the colors. Calculate the relative frequency of each color:

Color Red Blue Green Yellow Black White
Count 22 13 10 9 7 18

Answer to Practice Question 9.2.2

There are a total of 79 marbles.

Color Count Relative Frequency
Red 22 22/79 = 0.278 = 27.8%
Blue 13 13/79 = 0.165 = 16.5%
Green 10 10/79 = 0.127 = 12.7%
Yellow 9 9/79 = 0.114 = 11.4%
Black 7 7/79 = 0.089 = 8.9%
White 18 18/79 = 0.228 = 22.8%