Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
teach
pricing
sign-in
Download our FREE mobile app with 1000+ tests for CBSE, JEE MAIN, AIPMT
X
Search
Topics
Want to ask us a question?
Click here
Browse Questions
Student Questions
Ad
Home
>>
CBSE XI
>>
Math
>>
Statistics
0
votes
The standard deviation is __________ the mean deviation taken from the arithematic mean
cbse
math
class11
ch15
statistics
exemplar
q46
sec-a
easy
Share
asked
Jul 9, 2014
by
meena.p
Please
log in
or
register
to add a comment.
Can you answer this question?
Do not ask me again to answer questions
Please
log in
or
register
to answer this question.
1 Answer
0
votes
The standard deviation is greater than or equal to the mean deviation taken from the arithematic mean
answered
Jul 9, 2014
by
meena.p
Please
log in
or
register
to add a comment.
Related questions
0
votes
1
answer
The mean and standard deviation of some data for the time taken to complete a test are calculated with the following results:Number of observations =$25$,mean =$18.2$ seconds, standard deviation $=3.25$ seconds. Further another set of $15$ observations $x_1,x_2,......x_5$ also in seconds is now available and we have $\sum\limits_{i=1} ^{15}x_i =279$ and $\sum \limits_{i=1} ^{15} x_i^2 =5524$Calculate the standard deviation based on all $40$ observations
asked
Jul 3, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q3
sec-a
medium
0
votes
1
answer
The mean life of a sample of 60 bulbs was 650 hours and the standard deviation was 8 hours. A second sample of 80 bulbs has a mean life of 660 hours and standard deviation 7 hours. Find the overall standard deviation.
asked
Jul 4, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q12
sec-a
medium
0
votes
1
answer
Two sets each of $20$ observations , have the same standard deviation $5$. The first set has a mean $17$ and the second a mean $22$. Determine the standard deviation of the set obtained by combining the given two sets.
asked
Jul 3, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q8
sec-a
difficult
0
votes
1
answer
Determine the mean and standard deviation for the following distribution:
asked
Jul 4, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q18
sec-c
easy
0
votes
1
answer
The mean and standard deviation of a set of $n_1$ observations are $\bar{x_1}$ and $s_1$ respectively , while the mean and standard deviation of another set of $n_2$ observations are $x_2$ and $s_2$ respectively. Show that the standard deviation of the combined set of $(n_1+n_2)$ observations is given by $ S.D= \sqrt {\large\frac{n_1 (s_1)^2 +n_2 (s_2)^2}{n_1+n_2} +\frac{n_1n_2(\bar {x_1} -\bar {x_2} )^2}{(n_1+n_2)^2}}$
asked
Jul 9, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q47
sec-c
difficult
0
votes
1
answer
Let $x_,x_2,x_3,x_4,x_5$ be the observations with mean m and standard deviation s. The standard deviation of the observation $kx_1,kx_2,kx_3,kx_4,kx_5$ is
asked
Jul 8, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q32
sec-b
medium
0
votes
1
answer
Let $a,b,c,d,e$ be the observations with mean m and standard deviations $S$. The standard deviation of the observations $a+k,b+k,c+k,d+k,e+k$ is
asked
Jul 8, 2014
by
meena.p
cbse
math
class11
ch15
statistics
exemplar
q32
sec-c
difficult
Ask Question
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
AIPMT Crash Practice
5 Test Series
JEEMAIN
350+ TESTS
AIPMT
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
x
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...