How Do You Use Quartiles
Quartiles Are Used to Calculate the Interquartile Range, Which Is a Measure of Variability Around the Median. the Interquartile Range Is Simply Calculated as...
Quartiles are used to calculate the interquartile range, which is a measure of variability around the median. The interquartile range is simply calculated as the difference between the first and third quartile: Q3–Q1. In effect, it is the range of the middle half of the data that shows how spread out the data is.
How do you do quartiles?
- Quartile 1 (Q1) = (4+4)/2 = 4.
- Quartile 2 (Q2) = (10+11)/2 = 10.5.
- Quartile 3 (Q3) = (14+16)/2 = 15.
Why do we use quartiles?
Quartiles let us quickly divide a set of data into four groups, making it easy to see which of the four groups a particular data point is in. For example, a professor has graded an exam from 0-100 points. … The middle 50% of the data can useful to know about, especially if the data set has outliers.