SJS Travel Agency, a nation wide local travel agency, offers special rates on summer period. The owner wants additional information on the ages of those people taking travel tours. A random sample of 50 customers taking travel tours last summer revealed these ages. 18 29 37 42 57 58 47 49 53 61 67 19 31 38 44 48 50 54 62 68 24 34 39 45 48 51 58 70 54 63 27 36 39 46 48 51 55 59 64 74 28 36 40 46 49 52 56 60 66 77 C. Determine the D1, D2, D3, D4 of the frequency distribution and construct the graph.

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