The range is a measure of the spread or difference between scores.
It’s used primarily to quantify how much variation there is in your data set.
To calculate the range, you need to have at least two values from your data set that are different.
Otherwise, this statistic cannot be calculated.
The range is a measure of the spread or difference between scores.
It’s used primarily to quantify how much variation there is in your data set.
For example, if we had 15 students with grades on an exam and their average score was 80%, then 20% (range) .
Would represent the distance those students were away from each other: some scored 90%; others 60%.
The most common use for calculating ranges is when comparing performance across homework assignments within a given time period.
You might find out which coursework has more variability and needs further review by looking at whether it’s standard deviation or variance.
