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Find less than type cumulative frequency table {{10-20,15},{20-30,25},{30-40,20},{40-50,12},{50-60,8}}

Solution:
Your problem `->` less than type cumulative frequency table {{10-20,15},{20-30,25},{30-40,20},{40-50,12},{50-60,8}}


ClassFrequency
10 - 2015
20 - 3025
30 - 4020
40 - 5012
50 - 608

Less than cumulative frequency can be obtained by adding to the other frequencies.
ClassFrequencyLess than typeCumulative Frequency
10 - 2015Less than 2015
20 - 3025Less than 3040 (= 15 + 25)
30 - 4020Less than 4060 (= 40 + 20)
40 - 5012Less than 5072 (= 60 + 12)
50 - 608Less than 6080 (= 72 + 8)






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