Case study I : A team of students visted a village to study mortality rate during the past 5 years. The following data gives information about the occurrence of death at various ages. Age(years) No. of deaths
0 – 10 6
10 - 20 15
20 - 30 20
30 - 40 25
40 - 50 35
50 -60 45
60 - 70 44
70 - 80 15
a) The percent of deaths in the age group 0 – 10 years with reference to the current sample of the population is
i) 6% ii) 3% iii) 5% iv) None of these.
b) The mode of the above data is ___
i) 61.1 ii) 61.3 iii) 61.2 iv) 61.4
c) The median class is ___
i) 50 – 60 ii) 60 – 70 iii) 40 – 50 iv) 50-60
d) Cumulative frequency of the median class is
i) 100 ii)120 iii) 111 iv)101
e) The mean of the above data is __
i) 45 ii) 45.95 iii) 46.95 iv) 47.85