Lower Quartile Math Definition. Illustrated definition of quartiles. A data set has three quartiles.
Illustrated definition of quartiles. The second quartile q2 is also the median. The root of the word quartile is quart which means one fourth.
The median 50th percentile is the second quartile q 2.
Quartiles the quartiles are the three data values that divide an ordered data set into four groups where each group contains an equal number of data values. Quartiles the quartiles are the three data values that divide an ordered data set into four groups where each group contains an equal number of data values. Upper quartile or 75th percentile the median of the upper half of the data. Lower quartile or 25th percentile the median of the lower half of the data.
