Scatter Plots

Presentation

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Mathematics

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8th Grade

•

Easy

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CCSS

HSF-LE.A.1B, 8.EE.B.5, 8.F.A.3

Standards-aligned

Stacy Strickland

Used 483+ times

FREE Resource

6 Slides • 5 Questions

Scatter Plots

This is for students that missed class on Monday, March 7. Please complete these slides to catch up on material.

A scatter plot is a graph that is used to show data between two variables, also known as bivariate data.

For ex: height and weight.

Scatter plots show patterns, trends, and associations between variables that could impact each other.

Scatter Plots

Positive Association	Negative Association	No Association
Both variables are increasing.	One variable is increasing, the other is decreasing.	There is no relationship between the variables.

Types of Association

Multiple Choice

What type of association does this graph have?

positive

negative

none

all of the above

Scatter Plots can be described as linear and non-linear models. They are not perfectly linear or non-linear but they follow a trend.

Linear vs. Non-linear Models

Multiple Choice

Which scatter plot shows a linear relationship between x and y?

Graph A

Graph B

Graph C

Graph D

Outliers	Clusters
An outlier is a data point in a scatter plot that does not follow the trend of the data.	A group of data points that are closely grouped together.

outlier

cluster

Multiple Choice

What are the coordinates of the outlier?

(1,9)

(9,1)

(2,2)

y=x

To show the overall trend of a data set, we can use a Line of Best Fit.

A line of best fit should:

Follow the trend of the data
Split the data in half
Help to estimate or predict values that are not already given in the set.

Line of Best Fit

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

Scatter Plots

This is for students that missed class on Monday, March 7. Please complete these slides to catch up on material.

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