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Page 50 - CT&AI_CLasa_7_Part_1
P. 50

    Connecting

                                     5                                               the Dots

                                               computational thinking quest

                    Tick ( ) the correct option.

                      1.  If  there  are 29  terms in the  data  arranged     5.  In a set of three numbers, the range and the
                         in descending order, then the median is the         median is 5, and the mean is 6. Then the three
                                       term.    (Algorithmic Thinking)       numbers are                (Critical Thinking)

                                (a)  14th term      (b)  15th term
                                                                                    (a)  4, 5, 10       (b)  4, 5, 9
                                (c)  16th term      (d)  None of these
                                                                                    (c)  2, 5, 11       (d)  3, 5, 8
                      2.  The mean of p, q and r is same as the mean
                         of q, 2r and s. Then, which of the following is     6.  A competitor purposefully removed the Y-axis
                         correct?                    (Data Analysis)         labels from a bar graph showing rainfall over
                                                                             4 months (Jan–Apr).
                                (a)  p + s = r      (b)  q = r = s
                                                                                           Rainfall Over 4 months
                                (c)  q = r          (d)  p = r + s

                      3.  A set consists of five positive integers. Where,
                         •  the mode is 2.                                               Rainfall (mm)
                         •  the median is 3.
                         •  the mean is 4.,
                         Then the five numbers are
                                                 (Analytical Thinking)                    Jan  Feb Mar Apr
                                                                             You only know:
                                (a)  2, 2, 3, 4, 7     (b)  2, 2, 3, 6, 7
                                                                             •  The Median rainfall is 40 mm.
                                (c)  2, 2, 3, 3, 9     (d)  2, 2, 3, 4, 7    •   The bars for Jan, Feb, and Mar are in the
                      4.  The mean of 10 observations is 15. It was later      ratio 2 : 3 : 5.
                         discovered that one observation was misread         •  April has the highest rainfall at 60 mm.
                         as 12 instead of 21, and another was misread
                         as 0 instead of 9. What is the correct mean?        All monthly rainfall values are distinct, what is
                                                     (Data Analysis)         the rainfall for February.   (Data Analysis)

                                (a)  12.5           (b)  16.8                       (a)  25 mm          (b)  30 mm

                                (c)  17.8           (d)  21.5                       (c)  32 mm          (d)  36 mm

                     48        Computational Thinking-7 (Mathematics)

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