Topic 8: Display, Describe, and Summarize Data

Front

What is a tally chart?

Back

A tally chart is a tool used to record and count the frequency of responses or occurrences in a systematic way, often using marks (tallies) to represent each count.

Front

What does relative frequency mean?

Back

Relative frequency is the ratio of the number of times a particular event occurs to the total number of events, often expressed as a percentage.

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using rectangular bars to show the frequency or value of different categories.

Front

How do you calculate the percentage of a category in a data set?

Back

To calculate the percentage of a category, divide the number of occurrences of that category by the total number of occurrences, then multiply by 100.

Front

What is a box plot?

Back

A box plot is a graphical representation of data that shows the distribution through five summary statistics: minimum, first quartile, median, third quartile, and maximum.

Front

What does the range of a data set represent?

Back

The range of a data set is the difference between the highest and lowest values, indicating the spread of the data.

Front

What is an interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

What is a frequency table?

Back

A frequency table is a table that displays the number of occurrences of each category in a data set.

Front

How do you interpret a percentage bar graph?

Back

A percentage bar graph shows the relative sizes of different categories as percentages of a whole, allowing for easy comparison.

Front

What is the purpose of summarizing data?

Back

Summarizing data helps to simplify and present large amounts of information in a clear and understandable way, making it easier to analyze.