Task: Scatterplots, Correlation, Best Fit

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative 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 are the types of correlation?

Back

The types of correlation include 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 that there is no predictable relationship between the two variables.

Front

What is a best fit line?

Back

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

Front

How do you determine the strength of a correlation?

Back

The strength of a correlation can be determined by the correlation coefficient, which ranges from -1 to 1.

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive correlation.

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative correlation.