Relative Frequency

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations. It is often expressed as a percentage.

Front

How do you calculate relative frequency?

Back

Relative frequency = (Number of times an event occurs) / (Total number of events) x 100%.

Front

What does a percent bar graph represent?

Back

A percent bar graph visually represents the relative frequency of different categories as percentages of a whole.

Front

If there are 100 total cards and 60 are baseball cards, what is the relative frequency of baseball cards?

Back

60%.

Front

In a survey of 50 students, if 19 prefer clothing stores, what is the relative frequency of students who prefer clothing stores?

Back

38%.

Front

What is the relative frequency of an event that occurs 5 times out of 20 trials?

Back

25%.

Front

If a type of pizza is chosen 10 times out of 50 total choices, what is its relative frequency?

Back

20%.

Front

What is the relative frequency of cheetahs if there are 30 cheetahs out of 100 total animals?

Back

30%.

Front

True or False: If 30% of a collection is football cards, then one-fourth of the cards are football cards.

Back

False, because one-fourth is 25%.

Front

What is the relative frequency of a category if it represents 15 out of 60 total observations?

Back

25%.