The mean and Standard deviation of a sample were found to be 9 5 and 2 5, respectively Later, - Maths - Statistics

Question

The mean and Standard deviation of a sample were found to be 9 5
and 2 5,
respectively Later, an additional observation 15 was added to the
original data Find
the S D of the 11 observation
a) 2 6
b) 2 8
c) 2 86
d) 3 24

Anand Kumar Pandey · Accepted Answer

Dear Student
There is some mistake in the question student
I am assuming that the mean and standard deviation sample of size
10
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_61759e8bb72bb%20jpg"
style="width: 1023px; height: 962px;">
If this was not what you had in your mind please let us know
Regards

The mean and Standard deviation of a sample were found to be 9.5 and 2.5, respectively. Later, an additional observation 15 was added to the original data. Find the S.D. of the 11 observation. a) 2.6 b) 2.8 c) 2.86 d) 3.24

The mean and Standard deviation of a sample were found to be 9.5 and 2.5,
respectively. Later, an additional observation 15 was added to the original data. Find
the S.D. of the 11 observation.
a) 2.6
b) 2.8
c) 2.86
d) 3.24