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Recent questions tagged analysis-of-frequency-distributions-(coefficient-correlation)
Questions
For $a$ bivariate distribution $(x,y)$ if $ \Sigma x = 50 \: \Sigma y = 60 \: \Sigma xy = 350 \: \overline x = 5\: \overline y = 6 \: var \: x=4\: var \: y=9\: then \: r(x,y)=$
jeemain
math
cbse
class11
statistics
analysis-of-frequency-distributions-(coefficient-correlation)
difficult
q46
asked
Feb 1, 2014
by
thanvigandhi_1
1
answer
If two random variables $x$ and $y$ are connected by the relation $ 2x+y=3$ then $ r_{xy} = $
jeemain
math
cbse
class11
statistics
analysis-of-frequency-distributions-(coefficient-correlation)
difficult
q46
asked
Feb 1, 2014
by
thanvigandhi_1
1
answer
$cov (x,y) $ if $ \Sigma x = 55\: \Sigma y = 82\: \Sigma xy = 565\: n=8$ is
jeemain
math
cbse
class11
statistics
analysis-of-frequency-distributions-(coefficient-correlation)
difficult
q44
asked
Feb 1, 2014
by
thanvigandhi_1
1
answer
Correlation coeffiecient between $x$ and $y$ is $0.5 \: cov ( x,y )=8$ and $\sigma_y=4$ then $ \sigma_x$ is
jeemain
math
cbse
class11
statistics
easy
analysis-of-frequency-distributions-(coefficient-correlation)
q100
asked
Jan 31, 2014
by
thanvigandhi_1
1
answer
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