WAEC - Further Mathematics (2009 - No. 22)
Which of the following is the semi- interquartile range of a distribution?
\(Mode - Median\)
\(\text{Highest score - Lowest score}\)
\(\frac{1}{2}(\text{Upper quartile - Median})\)
\(\frac{1}{2}(\text{Upper quartile - Lower quartile})\)