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 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 is the line of best fit in a scatterplot?

Back

The line of best fit is a straight line that best represents the data on a scatterplot, showing the general direction of the data points.

Front

How can you use a scatterplot to make predictions?

Back

You can use a scatterplot to make predictions by finding the line of best fit and using it to estimate values for one variable based on the other.

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually display the relationship between two variables and to identify trends or patterns.

Front

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

Back

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

Front

How do you interpret the slope of the line of best fit?

Back

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

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that lies significantly outside the range of the other data points, which can affect the line of best fit.

Front

How can scatterplots be used in real-life situations?

Back

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