Sixth Volume of the Public Papers of President Barack Obama Available. The sixth volume of the Public Papers of President Barack Obama is now available. These volumes are produced right here at the Office of the Federal Register (OFR) by our...
Upper Quartile Definition and Formula. The upper quartile is the median of the upper half of a data set. This is located by dividing the data set with the median and then dividing the upper half that remains with the median again, this median of the upper half being the upper quartile.
What are the quartiles. The first quartile, or 25th percentile xL (also written as Q1), is the number for which 25% of values in the data set are smaller than x L. The second quartile or 50th percentile, xm (also written as Q2) is also known as the median.nstructions. This calculator computes the first, second and third quartiles from a data set: To calculate the quartiles from a set of values, enter the observed values in the box above.