![]() ![]() What's the median of these five numbers? Well the median's the middle number. So, this nine, eight,Įight, eight, and seven. What number is half way, what number is the median of the numbers in this bottom half? They told us to exclude the median when we compute the quartiles. If I had my pen tablet, I would circle it. It has five larger, five less, it's this nine, right over here. But here, I have 11 numbers, so my median is going Khan Academy, on median, and I go into much more detail on that. If that last sentence was confusing, watch the videos on Numbers, you actually would of had two middle numbers,Īnd then to find the median, you'd found the mean of those two. If we had 10 numbers here, if we had an even number of Now, the median is just the middle number. But this middle line is going to be the median of our entire data set. ![]() Roughly the middle two quartiles, it depends how some of Of our data, or the middle two quartiles. To define the middle twoįourths of our number. Now, let's plot the median, and this'll help us once getting this center line of our box, but then also we need toĭo that, to figure out what these other lines are, that kind of define the box. Our largest number isġ3, so we know the range. So, our smallest number is seven, and this is what the whiskers are useful for. We have some nines, and then, let's see, 13 is the largest number. Then we have some nines, actually we have a bunch of What's the lowest and what's the highest? Let's see, there's a seven here. Let's order this thing, so we can figure out the range of numbers. It, and at Khan Academy, we have 150,000 exercisesįor you to practice with. Learn any of this stuff is to actually practice I encourage you to do too, because the best way to I just have my mouse, and I'm interacting with the exercise, which The Khan Academy exercises, so I don't have my drawing tablet here. The order isn't checked with your answer, and I'm doing this off of So, we can drag these numbersĪround, which is useful, because we will want to order them. You might drag the numbers to put them in a different order. So, we have a bunch of data, here, and they say if it helps, Exclude the median whenĬomputing the quartiles. Represent the following data using a box-and-whiskers plot. ![]()
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