How to Read a Frequency Table (Grouped Data) | Frequency Tables Explained | Math with Mr. J

welcome to math with Mr Jay [Music] in this video I'm going to cover how to read and understand frequency tables specifically we're going to take a look at an example with grouped data we will talk about what grouped data means later in the video now as far as frequency tables they are a way for us to represent and display data in an organized and easier to understand way frequency tables show us the number of times something occurs in a data set and that something can be a value a range of values even something that's non-numerical so it doesn't have to be numbers whatever the case may be we are looking at the frequency the number of times something occurs let's jump into our example where we are going to take a look at a frequency table that is displaying this data right here these numbers represent the number of videos released last month by a group of content creators so a certain number of creators were asked about the number of videos they released last month these are the results now this is raw data that just means that this is the data as it was collected it's not organized at all so you can see it's difficult to interpret as is a frequency table will help us organize everything and our table is right here to the left now the left column of the table so this column going down right here that's the number of videos released so we have one two five videos six to ten videos 11 to 15 videos 16 to 20 videos and then 21 to 25 videos now these groups are called classes or class intervals since we have these classes these groups this is called grouped data so these are the groups right here in the videos released column if we have a wide range of data and a lot of individual values using groups helps us create a more condensed and manageable table depending on the situation and the data writing each individual value could create a very long table for example for this data we would have to go from 1 to 23. that table would be pretty long so think about if we had an even wider range and more individual values maybe hundreds or even thousands of values so these groups allow us to create a simpler and easier to work with table now as far as the right column so this column right here this is the frequency the number of times the values in our data show up within these groups so for example taking a look and reading this table how many creators released one two five videos last month well five creators how about six to ten videos well nine creators 11 to 15 videos eight creators 16 to 20 videos two creators and then 21 to 25 videos one Creator so you can see that this frequency table really helps organize and present the data in a more meaningful and easier way to look at than just looking at the raw data now let's answer some questions regarding the data starting with number one where we have how many creators were in the 16 to 20 range as far as videos released last month here is 16 to 20 right here so we have two creators two creators released 16 to 20 videos last month so they were in that range let's move on to number two where we have how many total creators were included in the data well for this we need to take a look at the frequency column and add all of those numbers up so we have five creators nine creators eight creators two creators and one creator so if we add those up that's going to give us the total amount of creators well 5 plus 9 is 14 plus 8 is 22 plus 2 is 24. plus 1 gives us 25. so 25 total creators and then lastly let's move on to number three where we have how many creators released less than 11 videos so less than 11 11 is not included so we are going to look right here so the 6 to 10 and the one two five videos released so we have five creators and nine creators so five plus nine gives us 14 creators released less than 11 videos last month so there you have it there are the basics of how to read and understand frequency tables I hope that helped thanks so much for watching until next time peace thank you