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Five students scored marks as follows : 8,10,15,20,22.
Find the standard deviation of the above distribution.
This question has multiple parts. Therefore each part has been answered as a separate question on Clay6.com
isc
class12
modelpaper
2007
sec-a
q1
q1-8
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Apr 16, 2013
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sreemathi.v
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The mean weight of 70 students in a class is 60 kg.The mean weight of the girls in the class is 53 kg and that of the boys is 70.5 kg.Find the number of girls in the class.
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If the regression equation of $x$ on $y$ is given by $mx-y+10=0$ and the equation of $y$ on $x$ is given by $-2x+5y=14$,determine the value of 'm' if the coefficient of correlation between $x$ and $y$ is $\large\frac{1}{\sqrt {10}}$.
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Apr 11, 2013
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Integrate : $\int\large\frac{1+\tan^2x}{\sqrt{1+\tan^2x}}\normalsize dx$.
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Apr 18, 2013
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In a standard deviation of the numbers,2,3,11 and x is $3\large\frac{1}{2}$,find the value of $x$.
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Apr 15, 2013
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isc
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Find the modulus and argument of the complex number $\large \frac{2+i}{4i+(1+i)^2}$
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Apr 11, 2013
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isc
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2011
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