wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

10 is the mean of 25 observations. If 1,3,5,...,49 are added to corresponding observations, then the new mean is

A
32
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
35
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
39
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
27
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 35
We know that, ¯¯¯x=1n ni=1xi
¯¯¯xnew=(x1+1)+(x2+3)+(x3+5)+...+(x25+49)25
=x1+x2+x3+...+x2525+1+3+5+...+4925
=10+25225
=35

Note:
1+3+5+...+(2n1)=n2

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Central Tendency
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon