Scatter Plot Correlations and Line of Best Fit

Front

What is a scatter plot?

Back

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

Front

What does a line of best fit represent in a scatter plot?

Back

A line of best fit is a straight line that best represents the data points in a scatter plot, indicating the overall trend of the data.

Front

How do you determine if a line of best fit is appropriate for a scatter plot?

Back

A line of best fit is appropriate if the data points show a clear trend or pattern. If the points are scattered randomly, a line of best fit may not be suitable.

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

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

Back

No correlation means there is no discernible relationship between the two variables; the data points are scattered without any trend.

Front

What is the purpose of the line of best fit?

Back

The purpose of the line of best fit is to summarize the relationship between the variables and make predictions based on the trend.

Front

How can you visually identify the line of best fit on a scatter plot?

Back

You can visually identify the line of best fit by drawing a straight line that minimizes the distance between itself and all the data points.

Front

What is the difference between a strong correlation and a weak correlation?

Back

A strong correlation means the data points are closely clustered around the line of best fit, while a weak correlation means the points are more spread out.

Front

What is an example of a scatter plot with no line of best fit?

Back

A scatter plot where the data points are randomly distributed without any clear upward or downward trend.