ScatterPlots/Line of 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 grid.

Front

What does a positive association in a scatter plot indicate?

Back

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

Front

What does a negative association in a scatter plot indicate?

Back

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

Front

What is the line of best fit?

Back

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

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by minimizing the distance between the line and all the data points, often using the least squares method.

Front

What does it mean if there is no association in a scatter plot?

Back

No association means that there is no discernible relationship between the two variables; changes in one variable do not affect the other.

Front

What is correlation?

Back

Correlation is a statistical measure that describes the strength and direction of a relationship between two variables.

Front

What is a strong positive correlation?

Back

A strong positive correlation means that the data points are closely clustered around a line of best fit that slopes upwards.

Front

What is a strong negative correlation?

Back

A strong negative correlation means that the data points are closely clustered around a line of best fit that slopes downwards.

Front

What is the purpose of the line of best fit in data analysis?

Back

The line of best fit helps to predict values and understand the relationship between variables in data analysis.