Displaying Categorical Data

Front

What type of data do bar graphs best represent?

Back

Categorical Data

Front

What is the total number of people surveyed if 100 responses were collected?

Back

100

Front

Why might a graph showing survey results be misleading?

Back

If the percents do not add up to 100.

Front

What is relative frequency?

Back

The ratio of the frequency of a particular category to the total number of observations.

Front

If 5 out of 100 students prefer cats, what is the relative frequency of students who prefer cats?

Back

5%.

Front

What is a pie chart used for?

Back

To represent categorical data as slices of a whole.

Front

What does it mean if a bar graph has unequal bar widths?

Back

It can misrepresent the data being displayed.

Front

How can you determine the most popular category in a bar graph?

Back

By identifying the tallest bar.

Front

What is the purpose of a survey in data collection?

Back

To gather information and opinions from a group of people.

Front

What is a common mistake when interpreting pie charts?

Back

Assuming that all slices are proportional without checking the percentages.