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
The Most Dangerous Stuff in the Universe - Strange Stars Explained
Neutron stars are the densest things that are not black holes. In their cores, we might find the most dangerous substance in existence: Strange matter. A bizarre thing so extreme, that it bends the rules of the universe and could infect and destroy everyt…
What The Midterm Elections Will Mean For Investors | Meet Kevin
[Music] [Applause] [Music] What about Keystone Pipeline? Should Biden have kept that going? It would have been the fourth phase of it. We’ve got the other three. Do we really need it? Any changes expected? Yeah, I think it’s clear now that the market thi…
Writing a quadratic function to fit data and estimate solutions | Algebra 1 (TX TEKS) | Khan Academy
We’re told Amtha is a high jump finalist at the World Athletics Championships. She tracks the heights of her practice jumps to get an idea of her capability during the competition. And so, this is timing the air intense of a second. This is height in feet…
Taoism: The Philosophy of Flow
Your alarm rings, waking you up from an unrestful sleep. You stretch across the bed and tap your phone to silence the disturbing noise. You’re tempted to pick it up and see what’s going on in the world, but you try really hard to stay away from it. Remind…
Worked example: Derivatives of sin(x) and cos(x) | Derivative rules | AP Calculus AB | Khan Academy
What we want to do is find the derivative of this G of X. At first, it could look intimidating. We have a s of X here, we have a cosine of X, we have this crazy expression here, we have a pi over cube root of x. We’re squaring the whole thing, and at firs…
Outlasting the Enemy in Shok Valley | No Man Left Behind
On October 2nd of 2008, we received the mission to go conduct an operation in the northern province of Nurse T in Afghanistan. The mission was to conduct a raid on a high-value target. The plan was to infiltrate from the bottom of the valley and work our …