Scatter Plots and Correlation

Front

What is a scatter plot?

Back

A scatter plot is a type of graph that shows the relationship between two numerical variables by displaying data points on a two-dimensional axis.

Front

What does correlation mean in statistics?

Back

Correlation refers to a statistical measure that describes the extent to which two variables change together.

Front

What is positive correlation?

Back

Positive correlation occurs when an increase in one variable leads to an increase in another variable.

Front

What is negative correlation?

Back

Negative correlation occurs when an increase in one variable leads to a decrease in another variable.

Front

What does no correlation mean?

Back

No correlation means that there is no discernible relationship between the changes in two variables.

Front

How can you identify a positive correlation in a scatter plot?

Back

A positive correlation is identified when the data points slope upwards from left to right.

Front

How can you identify a negative correlation in a scatter plot?

Back

A negative correlation is identified when the data points slope downwards from left to right.

Front

What is the purpose of using scatter plots?

Back

Scatter plots are used to visually assess the relationship between two variables and to identify trends or patterns.

Front

What is the significance of the line of best fit in a scatter plot?

Back

The line of best fit summarizes the trend of the data points and helps predict values.

Front

What does it mean if a scatter plot has a strong correlation?

Back

A strong correlation means that the data points are closely clustered around the line of best fit, indicating a reliable relationship between the variables.