The ages of ten students of a group are given below. The ages have been recorded in years and months:

The ages of ten students of a group are given below

8-6, 9-0, 8-4, 9-3, 7-8, 8-11, 8-7, 9-2, 7-10, 8-8

(i) Lowest age is 7 years, 8 months 

(ii) Highest age is 9 years, 3 months. 

(iii) Range = highest age – lowest age = 9 year, 3 months, 7 year, 8 months = 1 year, 7 months

The ages of ten students of a group are: 

8 – 6, 9 – 0, 8 – 4, 9 – 3, 7 – 8, 8 – 11, 8 – 7, 9 – 2, 7 – 10, 8 – 8. 

(i) Lowest age = 7 years 8 months 

(ii) Highest age = 9 years 3 months 

(iii) Range = Highest age – Lowest age 

= (9 years 3 months) – (7 years 8 months) 

= 1 year 7 months

The ages of 10 students of a group are given below:

8 - 6, 9 - 0, 8 - 4, 9 - 3, 7 - 8, 8 - 11, 8 - 7, 9 - 2, 7 - 10, 8 - 8

(i) Lowest age is 7 years 8 months.

(ii) Highest age is 9 years 3 months.

(iii) Range = Highest age – Lowest age

= 9 years 3 months – 7 years 8 months

= 1 year 7 months