Range The range is the difference between the highest and lowest values in a set of data. It provides a straightforward measure of the spread or variability...
Range
The range is the difference between the highest and lowest values in a set of data. It provides a straightforward measure of the spread or variability within the data.
Quartile Deviation
The first, second, and third quartile deviation are three important measures of dispersion that quantify how spread out the data is.
First quartile deviation (Q1): Q1 is the median of the data set when arranged in order from smallest to largest. It represents approximately 25% of the data points.
Second quartile deviation (Q2): Q2 is the difference between Q2 and Q1. It represents approximately 50% of the data points.
Third quartile deviation (Q3): Q3 is the difference between Q3 and Q2. It represents approximately 75% of the data points.
In summary, the range provides an overview of the spread within the data, while the first, second, and third quartile deviations help quantify how spread out the data is by providing a more specific measure of dispersion