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the regressive coefficients of regression equations are 0.5 and 0.7.
then the correlation coefficient is?
1. 0.55
2. 0.59
3. 0.65
4. 0.63
q2.the regression coefficients of regression eqns are -a and -b where a and b are positiv fractional values, then the correlation coefficient is
a) (a+b)/2
b) (a-b)/2
c) -c (fractional value)
d) c (fractional value)
the minimum value of f(x)=x^x is at
a) x=1/e
b) x=-1/e
c) x=e
d) x= -e
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