Question

Q.17
Following are the ages (in years) of 10 teacher
in a school.
23, 35, 32, 22, 25, 40, 42, 36, 45, 33
1. Find the age of the oldest teacher.
2. Find the Range
3. Find the mean are numbers.​

Answer 1

Answer:

Solution : 

1) age of the oldest teacher=54 years

age of the youngest teacher=23 years

2)Range=54-23=31 years

3)mean=sum of ages/number of people

mean=32+41+28+54+35+26+23+33+38+401032+41+28+54+35+26+23+33+38+4010

mean=350/10=35 years.

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Answer 2

Answer:

Arranging data in ascending order

= 23, 23, 28, 32, 33, 35, 38, 40, 41, 54

Age of oldest teacher = 54 Years.

Age of youngest teacher = 23 years.

(ii) what is the range of the ages of the teachers?

Answer :-

Range = Age of oldest teacher − Age of youngest teacher

= 54 − 23

= 31 years.

(iii) What is the mean age of these teachers?

Answer :-

Mean age = ( )/( ℎ)

= (23 + 26 + 28 + 32 + 33 + 35 + 38 + 40 + 41 + 54)/10

= 350/10

= 35 years.