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Skewness of frequency distribution — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsSkewness of frequency distribution5 Marks
Question
In $100$ different days during a year, minimum $20$ and maximum $149$ pilgrims visited a religious place. Its frequency distribution is as follows. Find the coefficient of skewness using Bowley's method by preparing an inclusive frequency distribution taking class length $10$ for the first class.
No. of pilgrims (less than) $29$ $49$ $69$ $99$ $129$ $149$
No. of days $8$ $21$ $48$ $75$ $90$ $100$
✓

Answer

$Q_1=52.46$ pilgrims, $M=71.72$ pilgrims, $Q_3=99.5$ pilgrims, $j=0.18$

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