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### Course: Statistics and probability>Unit 2

Lesson 1: Displaying quantitative data with graphs

# Dot plots and frequency tables review

Dot plots and frequency tables are tools for displaying data in a more organized fashion. In this article, we review how to make dot plots and frequency tables.
Dot plots and frequency tables are nice ways to organize and display data. To see how they work, we'll need some data.
Every four years, soccer teams from around the world compete in the World Cup. The following list shows the number of goals scored in the championship game of each World Cup from 1930-2014:
This data set is interesting, but it’s too disorganized. Let’s organize it into a frequency table and also a dot plot.

## Dot plot

Want a more detailed explanation of frequency tables and dot plots? Watch this video.
Want to practice creating dot plots and frequency tables yourself? Try creating frequency tables, creating dot plots, or reading dot plots and frequency tables.

## Want to join the conversation?

• Is a dot plot similar to a tally?
• Yes, in a way you are counting the number of occurrences within the bucket or range.
but the tally is mostly used for categorizing data. Sort of the first step in doing dot plots.
If we had so many 3 goals scored in the data it is better to do tally instead of counting the goals in our head.
• Why were the two scores ( 0* and 2*) included in the table and chart but in the original data set we were told they didn't count?
• the data represents goals, not the score between the teams. The games where 0* and 2* goals were ties, so the game went to penalty kicks to determine the cup winners. More goals were scored but not during gameplay - so these 2 goal counts are not representative of the final score.
• Is a bar graph and a histogram same or two different concepts?
I am totally confused.
• They two serve different purpose. Histogram is mostly used when dealing with frequency that is data sets that occur more once. In histogram you consider the area of the box while in bar chart you don't consider the area of the box
• What is the typical number of furniture one person has?
• the average person has 98.675 pieces of furniture
(1 vote)
• i am taking this course to help me in six sigma courses , would you recomande for other courses in statistics ?