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Lesson 2: Dot plots & frequency tables

# Representing data

Data can be represented in multiple ways such as tables, bar graphs, histograms, and frequency plots. These methods provide different perspectives of the same information, helping to answer various questions about the data.

## Want to join the conversation?

• What can Represent Data?
• At Sal said you can record data on a bar graph so that's one way you can represent data.
• At Sal refers to the graph as a bar graph, sometimes known as a histogram. Do they mean the exact same thing or are there differences?
• hi! a bar graph is different than a histogram: a histogram's bars show data in a range eg 1 bar for 10-20 where as a bar chart shows data for a certain piece of categorical data eg eye colour green's frequency is 4 so the bar goes up 4 blocks. hope this helped, let me know if you need anything else!
• how do you do stem and leaf plots
• The Stem acts like the tens place and the Leaf is the ones place so you take one number from the stem and one number from the leaf. Than you do that goin down a level after you complete one leaf.
• Is representing data in our every day life? why representing data important?
• Hi!
Graphs and charts are effective visual tools because they present information quickly and easily!
Hope this helped! :)
(1 vote)
• 80000000x999999999999999999x0=0 is that corect
• Yes, anything times 0 equals 0.
• at how did he get 160-80=20 and somehow said below 100? I need help with this question and I am currently going to 6th grade in September so please help me.
• Sal tells you he is doing Max - Min.
The max value = 100, not 160. So, the calculation is 100-80 = 20.

Sal's writing is just a little sloppy, so one of the zeroes looks a little like a 6.
• What are the different types of data?
• Hi Simum! There are many types of data, such include: qualitative data - data that can only be written in words, not numbers, for example, the colours of cars in a car park
quantitative data - data that can be written in numbers, for example, the heights of children
discrete data - numerical data that cannot be shown in decimals, for example, the number of children in a classroom
continuous data - numerical data that can be shown in decimals, for example, the weights of 10 babies
primary data - data that has been collected from the original source for a specific purpose, for example, if a school wanted to know what their students thought of the school canteen service they would question the pupils directly
secondary data - data that is not originally collected by a group for a specific purpose, for example, finding out the average cost of cars in a car park by using national statistics
(credits to bbc bitesize)
Hope this helped! :)