JEE Main 202122 Jul, Evening shiftMathematicsMediumStatistics and Probability258× since 2002
Consider the following frequency distribution :
Class : | 0-6 | 6-12 | 12-18 | 18-24 | 24-30
Frequency : | | | 12 | 9 | 5
If mean = and median = 14, then the value (a b)² is equal to _____________.