If a variate x is expressed as a linear function of two variates u and v in the form x=au+bv then mean x¯ of x is 

 If a variate x is expressed as a linear function of two variates u and v in the form x=au+bv then mean x¯ of x is 

  1. A

    au¯+bv¯

  2. B

    u¯+v¯

  3. C

    b¯u+a¯v

  4. D

    None of these

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    Solution:

    Since,x=au+bv

         Σx=aΣu+bΣv     nx¯=a(nu¯)+b(nv¯)     x¯=au¯+bv¯

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