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    7.  A bar graph shows the number of books sold            Side 3: 12 times        Side 4: 9 times
                         in four genres: Mystery, Sci-Fi, Romance, and          Side 5: 11 times        Side 6: 10 times
                         History. The bar for Mystery is twice as tall as        Which  of the  following  options  correctly
                         History. The bar for Romance is 10 units shorter
                         than Mystery. The bar for Sci-Fi  represents        represents  the  mean  number of times  each
                         the Mean of the other three categories. If the      side appears?          (Pattern Recognition)

                         total number of books sold is 100, how many                (a)   10 8129 11 10      933
                                                                                                              .
                         History books were sold?    (Data Analysis)                            6

                                                                                       10 8129 11 10
                                (a)  15             (b)  17                         (b)                      10
                                                                                                5
                                (c)  19             (d)  21                            10 8129 11 10

                                                                                    (c)                      857
                                                                                                              .
     computational thinking quest    8.  A group of students  took  a survey on their           7
                         preferred fruit.  The results were:  5  students              10 8129 11 10

                         like  apples,  3  like  bananas,  6 like  oranges,         (d)         4            95 .
     Tick ( ) the correct option.  and 2 like grapes. Which dot plot accurately
                         represents this data?   (Analytical Thinking)   10.  A bar graph shows the scores of 5 students.
                                                                             The bar for the 5th student is missing.
                                                                             Student 1: 80,  Student 2: 75, Student 3: 90
                                (a)                                          Student 4: 85,  Student 5: ?
                                   Apples  Bananas  Oranges Grapes             100                      ?
                                                                                90
                                                                                80
                                                                                70
                                (b)                                             60
                                                                               Score 50
                                                                                40
                                   Apples  Bananas  Oranges Grapes              30
                                                                                20
                                                                                10
                                                                                 0
                                (c)                                                  Student 1  Student 2  Student 3  Student 4  Student 5

                                   Apples  Bananas  Oranges Grapes
                                                                                           Students
                                                                             If Student  5’s  bar is  added,  the  new Mean
                                (d)                                          of the group  becomes  equal to  the  original
                                                                             Median  of the first 4 students.  What  is  the
                                   Apples  Bananas  Oranges Grapes           score of Student 5?          (Data Analysis)
                      9.  You  roll  a fair  six-sided die  60 times,  and
                         you  record  the  number  of times  each  side             (a)  80             (b)  81.5
                         appears. The results are as follows:                       (c)  82.5           (d)  85
                            Side 1: 10 times        Side 2: 8 times

                                       In a group of n people, the mean age is 21. When a 22nd person joins the group,
                                       the mean age decreases.
                                         1.  What was the maximum possible age of the 22nd person?
                                         2.  What does this tell you about the original number of people n?

                                             (a)  21, 22                            (b)  20, 21

                                             (c)  20, 22                            (d)  18, 21

                                                                                             Connecting the Dots      49

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