How to Find the Average Math with Mr J

Math with Mr. J · ⏱ 3:01 · 725.5K مشاهدة · 6 years ago

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Welcome to Math with Mr. In this video, we're going to discuss how to find or calculate an average. And the average is number that represents the typical or central value for data set. Now, you see that there are two lists of numbers or data sets on your screen. To the left, we have number one, and to the right, we have number two. So, we're going to go through and discuss how to find the average for those two. At the top of your screen in blue, you'll see the steps we're going to take in order to calculate the average. We're going to add up all the numbers and then divide by how many numbers there were in that data set or list of numbers. So, let's jump right in to number one. So, for number one, our list of numbers starts with an eight. And we actually have list of nine numbers there. So, the first thing we need to do is add up all nine of those numbers. And once we do that, we get sum or answer of 72. So, we again, we added up all nine of those numbers. Once we add them up, we divide by how many numbers are in that list or data set. And we have 1 2 3 4 5 6 7 8 9. So, we do 72 divided by 9. And that gives us an average of eight. Now, it worked out to be whole number. You will also get decimals when calculating averages. So, let's take look at number two. So, we have an 80, 75, 96, 82, 91, 87, and 70. So, the first thing we need to do is add up all of those numbers. And we get sum of 581. Now, we need to divide by how many numbers there are. 1 2 3 4 5 6 7. So, 581 divided by 7 will give us the average. And this one actually turns out to be another whole number, 83. Again, when you're calculating averages, you will get decimals. That's okay. So, that's how you find or calculate an average. Add up all of the numbers and then divide by how many numbers there were. Thanks so much for watching. Until next time, peace.