Unit 3 Review (8th Grade 2024)

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Tags

CCSS.8.SP.A.1

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend in the data, showing the general direction that the data points follow.

Tags

CCSS.8.SP.A.2

Front

What does a positive correlation in a scatter plot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Tags

CCSS.HSS.ID.B.5

Front

What does a negative correlation in a scatter plot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of using a trend line in data analysis?

Back

A trend line helps to predict future values based on the existing data by showing the overall direction of the data points.

Tags

CCSS.8.SP.A.2

Front

How can you determine the number of chapters in a book with a given number of pages using a scatter plot?

Back

You can use the trend line to estimate the number of chapters corresponding to the given number of pages.

Front

What does it mean if a line of best fit is not accurate?

Back

It means that the line does not represent the data well, and the predictions made using it may be unreliable.

Tags

CCSS.8.SP.A.2

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations and can affect the accuracy of the line of best fit.

Tags

CCSS.8.SP.A.1

Front

How do you interpret a scatter plot with no apparent trend?

Back

A scatter plot with no apparent trend suggests that there is no relationship between the two variables being analyzed.

Tags

CCSS.HSS.ID.B.5

Front

What is the relationship between the number of absences and final exam scores in a scatter plot?

Back

Typically, more absences correlate with lower final exam scores, indicating that attendance may impact academic performance.

Tags

CCSS.8.SP.A.1