Scatterplots and Data

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, where each point represents an observation in the dataset, showing the relationship between the variables.

Tags

CCSS.8.SP.A.1

Front

What does a positive association in a scatterplot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What does a negative association in a scatterplot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What does it mean if a scatterplot shows no association?

Back

No association means there is no discernible relationship between the two variables; changes in one variable do not predict changes in the other.

Tags

CCSS.HSS.ID.B.5

Front

How can you predict values using a scatterplot?

Back

You can predict values by identifying trends in the scatterplot, often using a line of best fit to estimate the value of one variable based on the other.

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 scatterplot, minimizing the distance between the line and all data points.

Tags

CCSS.8.EE.B.5

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visualize the relationship between two quantitative variables, helping to identify patterns, trends, and correlations.

Tags

CCSS.8.SP.A.1

Front

What does a linear relationship in a scatterplot look like?

Back

A linear relationship appears as a straight line or a pattern that closely follows a straight line in the scatterplot.

Tags

CCSS.8.F.A.3

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that fall far from the trend of the rest of the data; they can indicate variability in the data or errors in measurement.

Tags

CCSS.8.SP.A.1

Front

How do you determine the strength of a relationship in a scatterplot?

Back

The strength of a relationship can be determined by how closely the data points cluster around the line of best fit; tighter clustering indicates a stronger relationship.

Tags

CCSS.HSF-LE.A.1B