wiz-icon
MyQuestionIcon
MyQuestionIcon
7
You visited us 7 times! Enjoying our articles? Unlock Full Access!
Question

The mid - points of class intervals xi along with respective frequencies fi for recorded observations are given. Calculate the mean deviations about mean ¯¯¯x


A

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A


While calculating the mean of continuous frequency distributions we make assumption that frequency in each class is centered at its midpoint.

In a continuous frequency distribution once the mid points of class intervals are calculated the rest is same as for a discrete frequency distribution.

Total number of observation,N=ni=1fi.

¯x=ni=1fixiN

Mean deviation about mean =ni=1fi|xi¯x|N.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Mean Deviation for Grouped Data
STATISTICS
Watch in App
Join BYJU'S Learning Program
CrossIcon