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.  In                e run our modelling process on different subsets of the data to get multiple measures of
                     model quality.
                     a.   rain  est  plit                            b.   ross  alidation
                     c.   achine  earning                            d.   alidation
                Ans.  b.    ross  alidation
                  .   he data scientist  ill use a         for predictive modelling.
                     a.  Algorithm                                   b.   raining set

                     c.  Data compilation                            d.  Data preparation
                Ans.  b.    raining set
                  .  Assertion (A):  he  rain  est procedure is appropriate  hen there is a sufficiently large dataset available.
                   Reason (R):  he larger the dataset, the more accurate is the prediction.
                     a.   oth Assertion  A) and  eason   ) are true and  eason   ) is the correct e planation of Assertion  A).
                     b.   oth Assertion  A) and  eason   ) are true, but  eason   ) is not the correct e planation
                        of Assertion  A).
                     c.  Assertion  A) is true, but  eason   ) is false.
                     d.  Assertion  A) is false, but  eason   ) is true.
                Ans.  a.     oth Assertion  A) and  eason   ) are true and  eason   ) is the correct e planation of Assertion  A)

                  .   egression functions predict a          , and classification predicts a label.
                     a.  output                                      b.  quantity
                     c.  loss                                        d.  logic
                Ans.  b.    quantity
                  .   hich of the follo ing is a correct formula for calculating

                     a.              redicted i   Actual i)          b.              redicted i   Actual i)
                                 i                                               i



                     c.             Actual i    redicted i)          d.             Actual i    redicted i)
                                 i                                               i




                Ans.  a.               redicted i   Actual i)
                                 i

                  .   onsider the follo ing data. Identify  hich of the follo ing commands are correct to use split )

                            x    Y     M onth   d ay    F F M C   D M C   D C   I SI    RH    w ind    r ain  ar ea
                      1 7 8   2    5    sep     w ed    9 0 .1    8 2 .9   7 3 5 .7    6 .2    4 5    2 .2    0 .0   4 .8 8

                       3 5   6    3     sep     tu e   9 0 .3    8 0 .7   7 3 0 .2    6 .3    6 2    4 .5    0 .0   0 .0 0
                       7 5   9    9     f eb    thu    8 4 .2    6 .8    2 6 .6    7 .7    7 9    3 .1    0 .0   0 .0 0
                      4 9 1   4    4    au g    thu    9 5 .8   1 5 2 .0   6 2 4 .1   1 3 .8    2 1    4 .5    0 .0   0 .0 0

                      4 6 4   6    4    f eb    tu e   7 5 .1    4 .4    1 6 .2    1 .9    7 7    5 .4    0 .0   2 .1 4
                     a.    train,   test,y train,y test train test split  ,y,test si e  . )

                     b.    train,   test,y train,y test train test split  ,y,test si e  . , ,y)



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