Question

the ages of 10 teachers in years of a school are as below :
45, 35,41,37,38,49 57,55,36,47.
i) what is the age of the oldest teacher and of the youngest teacher?
ii) what is the range of the ages of the teacher?
iii) what is the mean age of these teachers?
iv) how many teachers have age more than the mean age? Pls fast ​

Answer 1

Answer:

• Age of oldest teacher  = 57 years and age of youngest teacher = 35 years
• The age range of the teacher  = 22
• The mean age of teachers is 44 years
• The number of teachers whose age is more than the mean age is 5.

Step-by-step explanation:

i) Arrange the data in ascending order

35,36, 37,38,41,45, 47, 49,55, 57

Age of oldest teacher  = 57 years

age of youngest teacher = 35 years

ii) The age range of the teacher

= Age of oldest teacher - age of youngest teacher

The age range of the teacher = 57 - 35 = 22

iii) Mean age of teachers = sum of age/number of teacher

= (35+ 36+ 37+38+41+45+47+49+55+57)/10

= 440/10

= 44

Mean age of teachers is 44 years

iv) The number teacher whose age more than the mean age is 5 (45,47,49,55,57).