What is a Bar Chart

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statistics basic concepts bar charts organizing data in visual ways can help you to understand it better one way to do this is through creating bar chart bar chart sometimes called bar graph is used to compare different types of information it uses bars or columns to reflect the data the horizontal axis is called the x-axis which represents type of variable that's oftentimes qualitative remember qualitative variables are categories that can only be expressed in words then there's the vertical or y-axis representing values that determine the height of each bar the numbers on the y-axis reflect frequency are the number of times something occurs for example this bar chart shows that more students play soccer than tennis or basketball if you're making your own chart it's important that the width of the bars is the same as well as the space between each one for example Daniels having birthday party and his mom wants to offer three different flavors of ice cream she can't decide which flavors to buy so she asks the guests what they prefer strawberry cotton candy vanilla Mint or chocolate after getting responses from 50 people she organizes the data into table 18 people voted for chocolate 10 for vanilla eight for strawberry 12 for mint and two for cotton candy to make bar graph she lists each of the flavors on the x-axis and on the y-axis the number of people who voted for each one since the largest number is 18 she uses increments of 2 on the y-axis 2 4 6 8 10 until she reaches 20. the key to choosing the increments on the y-axis is to consider the highest frequency if you had hundred or two hundred guests placing the numbers two by two would make the bar chart harder to read with this chart Daniel's mom can explain to her son that she'll be buying vanilla chocolate and mint for the party since these are the three most popular flavors feel free to check out our other videos about basic concepts and statistics are the full tutorial on our website at gcfglobal.org GCF global creating opportunities for better life