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.
In statistics, quartiles are three points that divide the data set into four equal groups. Each group represents the one-fourth of the data set. First quartile (Q 1), also known as lower quartile, splits the lower 25% of data. It is the middle value of lower half. Second quartile (Q 2) which is more commonly known as median splits the data in half (50%). Median divides the data into a lower half and an upper half. Third quartile (Q 3), also known as upper quartile, splits lowest 75% (or highest 25%) of data.