Line of best fit - scatter plots

Line of best fit - scatter plots

Assessment

Flashcard

Mathematics

8th Grade

Hard

Created by

Quizizz Content

FREE Resource

Student preview

quiz-placeholder

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data points.

2.

FLASHCARD QUESTION

Front

How do you determine the equation of a line of best fit?

Back

You can determine the equation by using statistical methods such as linear regression or by visually estimating the line that minimizes the distance to all points.

3.

FLASHCARD QUESTION

Front

What does the slope of a line of best fit represent?

Back

The slope indicates the rate of change between the dependent variable (y) and the independent variable (x). A positive slope means y increases as x increases, while a negative slope means y decreases as x increases.

4.

FLASHCARD QUESTION

Front

What is the y-intercept in the equation of a line?

Back

The y-intercept is the value of y when x is 0, representing where the line crosses the y-axis.

5.

FLASHCARD QUESTION

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that significantly differs from other observations, often lying far away from the trend of the data.

6.

FLASHCARD QUESTION

Front

How can you identify an outlier in a scatter plot?

Back

An outlier can be identified visually as a point that is distant from the cluster of other points or statistically using methods like the IQR (Interquartile Range) method.

7.

FLASHCARD QUESTION

Front

What is the formula for the slope (m) of a line given two points (x1, y1) and (x2, y2)?

Back

The slope is calculated using the formula: m = (y2 - y1) / (x2 - x1).

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?