LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
645 views
in Statistics by (38.0k points)
closed by

A class teacher has the following attendance record of 40 students of a class for the whole term. Find the mean number of days a student was present out of 56 days in the term.

1 Answer

+1 vote
by (39.7k points)
selected by
 
Best answer

Here, a = 51.5 

∴ \(\overline{x}= a+\frac{\Sigma f_id_i}{\Sigma f_i}\)

= 51.5 – \(\frac{99}{40 }\)

= 51.5 – 2.475 

= 49.025 

≃ 49 days

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...