Calculate mean deviation from the median of the following data: Class interval: 0-6 6-12 12-18 18-24 24-30 Frequency 4 5 3 6 2

Explanation

`((Class),(0-6),(6-12),(12-18),(18-24),(24-30))`
`((x),(3),(9),(15),(21),(27))`
`((f),(4),(5),(6),(3),(2),(20))`
`((cf),(4),(9),(12),(18),(20))`
`((x-14),(11),(5),(1),(7),(13))`
`((f(x-14)),(44),(25),(3),(42),(26),(140))`

Here, N = 20. So,

The cummulative frequency just greater than

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