Scatterplots

Front

What is a scatterplot?

Back

A scatterplot 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

How do you interpret a scatterplot?

Back

To interpret a scatterplot, look for patterns, trends, and correlations between the variables. A positive correlation means as one variable increases, the other does too; a negative correlation means as one variable increases, the other decreases.

Tags

CCSS.8.SP.A.1

Front

What does a strong correlation in a scatterplot indicate?

Back

A strong correlation indicates that the data points are closely clustered around a line, suggesting a strong relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a weak correlation in a scatterplot indicate?

Back

A weak correlation indicates that the data points are more spread out and do not follow a clear trend, suggesting a weak relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of a trend line in a scatterplot?

Back

A trend line is used to summarize the relationship between the variables and can help predict values.

Tags

CCSS.8.SP.A.2

Front

What does it mean if a scatterplot shows no correlation?

Back

No correlation means there is no apparent relationship between the two variables; the data points are scattered randomly.

Tags

CCSS.HSS.ID.B.5

Front

How can you determine the slope of a trend line in a scatterplot?

Back

The slope of a trend line is determined by the change in the y-values divided by the change in the x-values (rise over run).

Tags

CCSS.8.EE.B.5

Front

What is the difference between positive and negative correlation?

Back

Positive correlation means that as one variable increases, the other also increases. Negative correlation means that as one variable increases, the other decreases.

Tags

CCSS.HSS.ID.C.9

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that is significantly different from the other points in the scatterplot, which can affect the overall interpretation of the data.

Tags

CCSS.8.SP.A.1

Front

How can scatterplots be used in real-life situations?

Back

Scatterplots can be used in various fields such as education, health, and business to analyze relationships between variables, such as study time vs. exam scores.

Tags

CCSS.HSS.ID.B.5