Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots

Students can use the Spectrum Math Grade 8 Answer Key Chapter 6 Lesson 6.1 Interpreting Scatter PlotsĀ as a quick guide to resolve any of their doubts

Spectrum Math Grade 8 Chapter 6 Lesson 6.1 Interpreting Scatter Plots Answers Key

A scatter plot shows the relationship between two sets of data. It is made up of points. The points are plotted by using the values from the two sets of data as coordinates.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 1
This scatter plot shows the relationship between the temperature and the number of sno-cones sold. As one value increases, the other appears to increase as well. This indicates a positive relationship.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 2
A negative relationship would show that more sno-cones are sold as the temperature decreases.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 3
No relationship would show no clear trend in the data.

Use the scatter plot above to complete the data table. Include the coordinates for all 14 points.

Question 1.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 4
Answer:

Explanation:
The scatter plot is an X-Y diagram that shows a relationship between two variables are Temperature and Sno-cones.
It is used to plot data points on a vertical and a horizontal axis.
Scatter plots are an essential type of data visualization that shows relationshipsĀ between variables.

Does each scatter plot below indicate a positive relationship, a negative relationship, or no relationship?

Question 2.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 5
Answer:

Explanation:
The first scatter plot is an X-Y diagram that shows a relationship between two variables are Age and Height, which shows negative relationship.
A negative relationship would show that more products are sold as the cost decreases.
The second scatter plot is an X-Y diagram that shows a relationship between two variables which has no relation ship.
There is no clear trend between the Ages and Heights given in the X-Y above diagram.
The third scatter plot is an X-Y diagram that shows a relationship between two variables which shows positive relation ship.
A positive relationship would shows that as height increases the weight also increases.

Use the data below to create a scatter plot on the grid. Be sure to include all labels.

Question 3.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 6
Answer:

Explanation:
The scatter plot is an X-Y diagram that shows a relationship between two variables are hours studying and test grades.
It is used to plot data points on a vertical and a horizontal axis.
Scatter plots are essential type of data visualization that shows relationships between variables. TheĀ  scatter plot is an X-Y diagram that shows a relationship between two variables which shows positive relationship.
A positive relationship would show that as the number of hours studying increases the marks in the test grade also increases.

A scatter plot is a graph that shows the relationship between two sets of data.
To see the relationship clearly, a line of best fit, or trend line, can be drawn.
This is drawn so that there are same number of data points above and below the line.
Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 7
This scatter plot shows the relationship between average high temperature and a family’s gas use for heating fuel each month.

Answer the questions by interpreting data from the scatter plots.

Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 8

Question 1.
Which two sets of data are being compared by this scatter plot?
Answer:
Age and Height.

Explanation:
The above scatter plot is an X-Y diagram that shows a relationship between two variables,
Ages and Heights given in the X-Y above diagram.

Question 2.
Is the correlation positive or negative?
Answer:
Positive relation ship.

Explanation:
The above scatter plot is an X-Y diagram that shows a relationship between two variables which shows positive relationship and trend between the Ages and Heights given in the X-Y above diagram.

Question 3.
How many people were polled?
Answer:
30 people.

Explanation:
The above scatter plot between two variables Ages and Heights are of 30 people.

Question 4.
How do you explain the data points at the end that do not follow the line of best fit?
Answer:
People stop growing after certain age.

Explanation:
People stop growing after certain age as shown below picture marked blue color rectangle.

Spectrum Math Grade 8 Chapter 6 Lesson 1 Answer Key Interpreting Scatter Plots 9

Question 5.
Which two pieces of data are being compared by this scatter plots?
Answer:
Price of Entree and numbers ordered.

Explanation:
The above scatter plot is an X-Y diagram that shows a relationship between two variables,
the Price of the Entree in dollar and number of entree ordered given in the X-Y above diagram.

Question 6.
Draw the line of best fit. Is the correlation positive or negative?
Answer:
Negative.

Explanation:
The above scatter plot is an X-Y diagram that shows a relationship between two variables which shows negative relation ship and trend between the Price of the Entree in dollar and number of entree ordered given in the X-Y above diagram.

Question 7.
There are a few outliers for this scatter plot. What do they show?
Answer:
Some expensive Entree are still popular.

Explanation:
The above scatter plot is an X-Y diagram that shows some expensive Entree are still popular, the Price of the Entree in dollar and number of entree ordered given in the X-Y as shown in the above diagram.

Question 8.
What is a possible explanation?
Answer:
People will pay a lot for certain house specialty.

Explanation:
The above scatter plot is an X-Y diagram that shows some expensive Entree are still popular, the Price of the Entree in dollar and number of entree ordered given in the X-Y diagram as shown above and the people will pay a lot for certain house specialty.

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