Continuous data can be grouped using a frequency tally. The class interval 0 ≤ \(x\) < 10 can have any values greater than or equal to 0 but less than 10 in it. This group includes anything ...

Pranab Kumar Sen, Asymptotically Most Powerful Rank Order Tests for Grouped Data, The Annals of Mathematical Statistics, Vol. 38, No. 4 (Aug., 1967), pp. 1229-1239 ...