AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

An aircraft has 120 passenger seats. The number of seats occupied during 100 flights is given in the following table:

Determine the mean number of seats occupied over the flights.

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

210

109

313

125

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

As it is given that an aircraft has 120 passenger seats.
The number of seats occupied during 100 flights is given by the table.

Let us find the mean number of seats occupied over the flights.

Mean (x ¯) = a + ∑ f i d i ∑ f i

Where a = assumed mean

d i = x i − a

Let assumed mean = 110
Total number of observations N = 100
Class width = 4

Mean (x ¯) = a + ∑ f i d i ∑ f i = 110 + − 8 100 = 110 − 0.08 = 109.92

We know that seats cannot be possible in decimal,
So the mean number of seats = 109
So, the mean number of seats occupied over the flights is 109.
Therefore, option 2 is correct.

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!