Question

Class Interval Frequency

30-40 2

40-50 10

50-60 7

60-70 8

70-80 12

80-90 6

90-100 9

Answer 1

mean the answer is 70 - 80 =  12 times{mean = most repeated term}

median = the answer is 60 - 70 = 8 times{median= middle term}

mode = the answer is 12 - 10 = 2{mode = highest value - lowest value}