The five hottest temperatures (in Fahrenheit) recorded at the Central State Zoo and there frequency of occurrence over the past five years were examined by the zoo's statistician. These temperatures included: 55, 72, 86, 94, and 96. The relative frequency for a temperature of 55 was 20%, for a temperature of 72 was 30%, for a temperature of 86 was 14%, for a temperature of 94 was 15%, and for a temperature of 96 was 21%. What is the cumulative relative frequency for the temperature of 86?
A) 14%
B) 20%
C) 50%
D) 64%

Question

Quizplus · Accepted Answer

The cumulative relative frequency for a temperature of 86 is the sum of the relative frequencies for all temperatures up to and including 86. This includes the relative frequencies for temperatures of 55, 72, and 86, which add up to 14% + 30% + 14% = 64%.

The Five Hottest Temperatures (In Fahrenheit) Recorded at the Central