Q. 85.0( 3 Votes )

If xi's are the midpoints of the class intervals of a grouped data, fi's are the corresponding frequencies and 7 is the mean then
A. 1

B. 0

C. - 1

D. 2

Answer :

If mean = 7, xi’s = midpoints of the class intervals and fi = corresponding frequencies


Mean is given by,




Or


Or


Or

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
The Heterotrophic Mode44 mins
Nuts and Bolts of Editing40 mins
Champ Quiz | Strength of Acids and Bases31 mins
Newton's Laws of Motion - Myths vs Facts57 mins
Learn Concepts of Direction and Distance!52 mins
History of Pythagoras and His Theorem37 mins
Out-of-the-box Knowledge of Acids and Bases27 mins
Quiz | Physical Properties of Metals and Non-Metals24 mins
Clear the Confusion of Mass and Weight45 mins
The Making of Germany and Italy49 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses