Range: The range is a measure of spread that calculates the difference between the maximum and minimum values in a data set.
Interquartile Range (IQR): The IQR is another measure of spread that represents the range covered by the middle 50% of data. It's found by subtracting Q1 from Q3.
Variance: Variance is a statistical measure of spread that quantifies how much individual observations differ from their mean value. It considers all values in a dataset to calculate variability accurately.