Question

For a particular year, following is the distribution of ages(in years) of primary school teachers in a district:a. Write the lower limit of the first class interval.b. Determine the class limits of the fourth class interval.c. Find the class mark of the class 45-50.d. Determine the class size.e. Construct a cumulative frequency table.Age(in years) 15-20 20-25 25-30 30-35 35-40 40-45 45-50Number of teachers 10 30 50 50 30 6 4

Answer 1

lower class=15 20 25 30 35 40 45
class size=upper limit+lower limit/2
for eg 15+20/217.5