LSHS Scatterplot Correlation
Trends Present on Scatterplots
Scatterplots: How A Line of Best-Fit Shows Correlation
You just finished an activity where you guessed a celebrity's age and created a scatterplot with the ages you guessed and each celebrity's actual age. The line that you drew was called the line of best-fit.
On scatterplots, the trend-line (line of best-fit) can be used to determine whether there is a relationship between paired data.
If two variables have a relationship in which as one variable increases and as a result the other variable increases then the relationship is said to be positive. Watch the video to see what the graph of positive correlation looks like and some examples of positive correlations.
If two variables have a relationship in which one variable increases and as a result the other variable decreases then the relationship is considered to be a negative correlation. Watch the video to see what a negative correlation looks like on a graph and an example of negative correlation.
If two variables do NOT have anything to do with each other or are not related then the two variables would be considered to have no correlation. Watch the video to see what no correlation looks like on a graph and an example of no correlation.