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Answer
$\bar{x}=6.45$
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For a skewed frequency distribution, $Q_2-Q_1=3\left(Q_3-Q_2\right)$. Find the coefficient of skewness.
→Draw a random sample of $2$ per cent “students without replacement from $600$ students of a particular college for giving their feedback on faculty members. There are $200$ students in each of the three years ($F.Y., S.Y.$ and $T.Y.$)
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For $F.Y. : 158, 092, 411, 745, 009, 724, 674, 550, 716, 359, 419, 696, 200, 458.$
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Find the average percentage rise in price using weighted mean from the following data about the percentage rise in price of building material :
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Sum of how many terms of a $GP. 800,400,200,$ is $1500$ ?
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$1537, 3370, 0264, 0721, 1940, 2016 1066, 1648, 2130, 0921, 2029, 0086, 0825, 0879, 3500.$
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In how many ways can $3$ boys and $2$ girls be arranged in a row such that,
$(i)$ both the girls remain together ?
$(ii)$ boys and girls are alternately arranged ?
$(iii)$ all the three boys remain together ?
→$(i)$ both the girls remain together ?
$(ii)$ boys and girls are alternately arranged ?
$(iii)$ all the three boys remain together ?
Discuss some applications of statistics.
At present statistics has been accepted as an independent part of scientific methods. As its scope becomes wide, statistics is not only useful for quantitative data but also useful for qualitative data.
Area (in sq. mt.) of $5$ different regions is as under. Draw a pie diagram :
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