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 axis.

Front

What does the line of best fit represent in a scatterplot?

Back

The line of best fit is a straight line that best represents the data on a scatterplot, indicating the general direction of the relationship between the variables.

Front

How do you determine the average value from a scatterplot?

Back

You can estimate the average value for a given input by locating the corresponding point on the line of best fit.

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does a positive correlation indicate in a scatterplot?

Back

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

Front

What does a negative correlation indicate in a scatterplot?

Back

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

Front

What does no correlation mean in a scatterplot?

Back

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

Front

How can you identify a negative correlation on a scatterplot?

Back

A negative correlation can be identified when the points on the scatterplot slope downwards from left to right.

Front

How can you identify a positive correlation on a scatterplot?

Back

A positive correlation can be identified when the points on the scatterplot slope upwards from left to right.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess relationships between variables, identify trends, and detect outliers.