Scatterplots-Correlation & Best Fit Lines

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does correlation mean in statistics?

Back

Correlation refers to a statistical relationship between two variables, indicating how one variable may change in relation to another.

Front

What are the types of correlation?

Back

The types of correlation are positive correlation, negative correlation, and no correlation.

Front

What is a positive correlation?

Back

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

Front

What is a negative correlation?

Back

A 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 there is no predictable relationship between the two variables.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatterplot, showing the trend of the data.

Front

How do you determine the line of best fit?

Back

The line of best fit can be determined by minimizing the distance between the line and all the data points.

Front

What is the purpose of a scatterplot?

Back

The purpose of a scatterplot is to visually display the relationship between two quantitative variables.

Front

What does it mean if the scatterplot shows a curvy pattern?

Back

A curvy pattern indicates a non-linear relationship between the variables, suggesting that the correlation is not constant.