B. The following are the ages of 30 teachers in Mexico National High School. 28 30 35 22 45 48 64 51 36 58 29 52 48 47 33 34 38 44 49 61 67 55 46 24 25 32 28 34 37 65 Class Mark 09 64 This is the frequency distribution of the data above using 10 intervals. Class Tally Frequency Boundaries Interval Upper Lower C7 - 71 1 1 66.5 17) 62-66 !! 12) 61.5 66.5 57 - 61 JI 2 56.5 61.5 52-56 1 2 51.5 56.5 47 - 51 TI-T 13) 46.5 51.5 42-46 II 2 41.5 18) 15) 41.5 19) NN 54 49 44 N 39 32 36 6 31.5 36.5 20)
