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b.
                           80
                           70
                          No. of people observed  60

                           50
                           40
                           30
                           20
                           10
                            0
                             0   1 1.2 1.4 1.6 1.8 2
                                    Heights (in m)

                   c.
                           80
                           70
                          No. of people observed  60

                           50
                           40
                           30
                           20
                           10
                            0
                              0  1 1.2 1.4 1.6 1.8 2
                                    Heights (in m)


              Ans.  a. left skewed
                   b. not skewed

                   c. right skewed
              11.  A school has 900 books in its library. The books are grouped as per categories as follows:


                    Text Books     Fiction    Autobiographies     Self-help books    Magazines, Journals

                         150         400            50                  125                 175

                   Construct a pie-chart from the given data.

              Ans.  Total number of books = 900

                    Category of books                 Number of books          Central Angle (degrees)

                    Text Books                               150                         60

                    Fiction                                  400                         160

                    Autobiographies                          50                          20

                    Self-help books                          125                         50

                    Periodicals, journals                    175                         70

                    342     Touchpad Artificial Intelligence (Ver. 2.0)-XI
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