Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

Front

What does each point on a scatterplot represent?

Back

Each point on a scatterplot represents an individual data point, showing the values of the two variables being compared.

Front

What is correlation in a scatterplot?

Back

Correlation describes the strength and direction of a relationship between two variables. It can be positive, negative, or none.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

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

Front

How can you use a trend line in a scatterplot?

Back

A trend line can be used to predict values and show the general direction of the data.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually represent the relationship between two quantitative variables and to identify trends or patterns.

Front

What does it mean if points on a scatterplot are widely scattered?

Back

If points are widely scattered, it indicates a weak correlation between the two variables.

Front

What is an example of a positive correlation in real life?

Back

An example of a positive correlation is the relationship between study time and test scores; generally, more study time leads to higher scores.

Front

What is an example of a negative correlation in real life?

Back

An example of a negative correlation is the relationship between the amount of time spent watching TV and grades; more TV time often leads to lower grades.