Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a positive correlation in a scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

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

Front

What does it mean if there is no correlation in a scatterplot?

Back

No correlation means that 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 trend line in a scatterplot?

Back

A trend line is a straight line that best represents the data points in a scatterplot, showing the general direction of the relationship.

Front

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

Back

The purpose of a trend line is to make predictions about one variable based on the value of another variable.

Front

How do you interpret the slope of a trend line in a scatterplot?

Back

The slope of a trend line indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations; they can affect the overall interpretation of the relationship.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

How can scatterplots be used in real-life applications?

Back

Scatterplots can be used in various fields such as economics, biology, and social sciences to analyze relationships and make predictions.