Dot Plots and Frequency Tables

Flashcards based on lecture notes about dot plots and frequency tables.

What is a dot plot?

A number line with dots that show data.

What is frequency in the context of data?

The number of times data occurs.

What is a frequency table?

A table showing how often each value (or group of values) in a set of data occurs.

What is relative frequency?

The percentage of time each data point occurs.

What is the first step in making a dot plot and frequency table?

Draw a number line with values, using a scale relevant to the data.

What is the second step in making a dot plot and frequency table?

For each value in the data, draw a dot on the number line. The number of dots above each value corresponds to its frequency.

What is the third step in making a frequency table?

Create a table showing each data value and its frequency (number of occurrences/dots).

How to calculate relative frequency?

Divide the frequency of each data point by the total number of data points, and then multiply by 100 to get percentage.