The enrolment of a school during seven consecutive years were as following.
1,580 2,020 2,580 3,200 3,550 3,710 4,010
(a) Find the mean enrolment of the school for this period
(b) Find the new mean,if the enrolment of the current year, that is 4,270 is also included.
Answers
Answered by
3
Answer:
(a) 2,950
(b) 3,115
Step-by-step explanation:
a) 1,580 + 2,020 + 2,580 + 3,200 + 3,550 + 3,710 + 4,010 /7
= 20,650/7
= 2,950
b) 1,580 + 2,020 + 2,580 + 3,200 + 3,550 + 3,710 + 4,010 + 4,270/8
= 24,920/8
= 3,115
Answered by
2
Answer:
a. 2950
b. 3115
Step-by-step explanation:
a. mean=sum of observations/number of observations
=(1580+2020+2580+3200+3550+3710+4010)/7
=20650/7=2950
b. new mean=(1580+2020+2580+3200+3550+3710+4010+4270)/8
=24920/8=3115
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