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Presentation of data — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsPresentation of data2 Marks
Question
Prepare ‘less than’ type cumulative frequency distribution from the following :
Observation $10$ $20$ $30$ $40$ $50$
Frequency $10$ $30$ $30$ $20$ $10$
✓

Answer

Less than or equal
to observation		 ‘Less than’ cumulative frequency cf
$10$ $10 = 10$
$20$ $10 +30 = 40$
$30$ $10 + 30 +30 = 70$
$40$ $10 +30 +30 +20 = 90$
$50$ $10 +30 + 30 +20 +10 = 100$

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