134
Lesson 134 of 500 · Extra Passages
⭐ 30 XPLine of Best Fit Part 3
📖Story Brief #134
A line of best fit is a straight line that best represents the data points on a scatter plot.
🎯 Your mission
Read it. Think it. Answer it.
⚡ The twist
Slow down. The first answer that pops up isn't always the right one.
Read this passage
Highlight speedNormal
A line of best fit is a straight line that best represents the data points on a scatter plot. It shows the relationship between two variables, helping to predict future values. To create this line, you can use a method called 'least squares,' which minimizes the distance from each point to the line. For example, if you plot the number of hours studied against test scores, the line of best fit will help you see if there’s a trend - like whether studying more generally leads to higher scores. If most points cluster around the line, it indicates a strong relationship. The further away points are from the line, the weaker the relationship becomes. This line not only helps visualize data but also allows for making predictions about the outcome based on new input values.
Check Your Understanding
Question 1
1 of 2What does a line of best fit represent in a scatter plot?
🏆
Stretch Challenge
Try this in real life this week.
Read for 10 minutes today — anything you want.
👨👩👧
For the dinner table
“What's one thing you read today that surprised you?”
🎯
Next Smart Lesson
We'll pick a lesson that matches exactly how well you're reading right now.
📄Share card
Share this lesson
Send it to a parent or fellow reader. 5 minutes is all it takes.
🖨️View in Shop
Checkout complete lesson on Extra Passages for 8th Grade
Get the full Extra Passages track as a printable PDF — all lessons, worksheets, and answer keys.