yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Interpreting line plots


2m read
·Nov 10, 2024

We're told that the weights of 11 different babies are recorded in the line plot below, and we see there's one, two, three, four, five, six, seven, eight, nine, ten, eleven data points; each one represents a different baby whose weight is recorded. Each weight was rounded to the nearest one-eighth of a pound.

All right, then they ask us what is the difference in weight between the two heaviest babies. So, pause this video and try to figure that out before we work through it together.

All right, now where are the two heaviest babies? So this one out here, this is the heaviest baby. And what is its weight? Let's see, its weight is right over there. And what is that number or what is that weight? So this is 9, and this is 10, and we have one, two, three, four, five, six, seven, eight equal spaces. So each of these is an eighth.

So this is nine and one, two, nine and two-eighths. So this one is—let me write this—this is nine and two-eighths. Another way to think about it is two-eighths is the same thing as one-fourth because if you think about it as one, two, three, four equal spaces, this is also nine and one-fourth of the way to ten. So this is the same thing as nine and one-fourth.

And then what's the second-heaviest baby? Because we want the weight difference between the two heaviest. So the second heaviest baby is right over here, and we know that it is eight and a half pounds.

So what we really need to do is figure out what is the difference between nine and two-eighths, or nine and one-fourth, and eight and a half, right over here? So we could set this up as a subtraction. This is going to be nine—and let's call it nine and one-fourth—minus eight and a half.

We can actually use these measurement scales or you can even do this as something of a number line to help us think about this. The difference is this length right over here, and we could think about it in terms of eighths because each of these hash marks is an eighth. So one-eighth, two-eighths, three-eighths, four-eighths, five-eighths, and six-eighths.

So this is equal to six-eighths. We could also think about it in terms of fourths, so this is one-fourth, two-fourths, and three-fourths. So this is equal to three-fourths.

So what's the difference in weight between the two heaviest babies? It is three-fourths of a pound.

More Articles

View All
Khan Academy announces GPT-4 powered learning guide
Hi everyone, Sal Khan here from Khan Academy, and I’m very excited to let you all know about the work that Khan Academy is now doing in artificial intelligence. Obviously, over the last many months, there’s been a lot of talk about artificial intelligenc…
Why was Reagan's presidency so significant? | US Government and Civics | Khan Academy
Why was Ronald Reagan’s presidency so significant? Ronald Reagan plays an important role in the modern presidency for two big things that he did. One, on the domestic front, he broke considerably with the kind of way of doing things in Washington. He, uh…
My Tenant Horror Story.
What’s up you guys, it’s Graham here. So chances are, if you ask any real estate investor about their experience as a landlord, it’s pretty much inevitable that a large percentage of them will open up and tell you about at least one of their tenant horro…
You Are a Ghost Driving a Meat Covered Skeleton Made Out of Stardust
Consciousness, it’s our awareness, our understanding, our ignorance, our daily. Consciousness leaves out more than it takes in, and due to this, it leaves out important things, things that would help relieve us if we knew them. If we had a higher awarenes…
It’s Mind Blowing That Our Minds Can’t Be Blown
They’re scientifically minded types; it’s astonishing who say, “Perhaps we won’t be able to understand the next set of laws of physics. Perhaps we won’t be able to understand the aliens.” It’s nothing but the appeal to the supernatural. It’s logically equ…
Why 80% of New Years Resolutions FAIL by today
What’s up you guys? It’s Graham here. So, how sad is this? 80% of New Year’s resolutions fail by the second week of February. And if you haven’t noticed, today is February 14th, the second week of February. Now, I know it’s also Valentine’s Day, but for t…