MH SET 2013: 1 December, Paper III, Commerce

DEC - 50313/III




2

DEC - 50313/III

17. If each observation is doubled,                  17.   tj izR;sd fujh{k.k nqIiV dsys] rj fopj.k
    then the coefficient variation
                                                           xq.kkad ------------------------------ -
    will .......................... .

    (A) not be changed                                     (A) cny.kkj ukgh

    (B) be doubled                                         (B) nqIiV gksbZy
    (C) be decreased to half of the
                                                           (C) fueiV gksbZy
           original

    (D) be increased by 2                                  (D) 2 us ok<sy

18. The regression lines are given by                18.   tj lekJ;.k js"kk iq<hyizek.ks vlrhy
                           3                                                      3
                   x =       y−3                                           x =      y−3
                           2                                                      2
                          5                                                       5
                   y =      x + 2,                                         y =      x+2
                          8                                                       8

    then the correlation coefficient                       rj    x vkf.k       y e/khy        lgla c a / k xq . kd
    between x and y is .................... .              --------------- vlsy-

              15                                                     15
    (A)                                                    (A)
              16                                                     16

              16                                                     16
    (B)                                                    (B)
              15                                                     15

              4                                                      4
    (C)                                                    (C)
              5                                                      5

              5                                                      5
    (D)                                                    (D)
              4                                                      4
                                                10

DEC - 50313/III

ROUGH WORK




    35               [P.T.O.

DEC - 50313/III

ROUGH WORK




    36