Given below are the number of students i...

Given below are the number of students in 30 class rooms in a school. Construct a frequency distribution table for this data with a class interval of 4.
`{:(25" "30," "24" "18," "20" "24," "32" "35," "22" "20),(22" "32," "40" "28," "30" "25," "26" "29," "34" "15),(38" "28," "19" "16," "15" "20," "24" "30," "26" "18):}`

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