Mean and standard deviation of 100 items...

Mean and standard deviation of 100 items are 50 and 4, respectively . Find the sum of all the item and the sum of the squares of the items.

Text Solution

Verified by Experts

The correct Answer is:

251600

Topper's Solved these Questions

STATISTICS
KUMAR PRAKASHAN|Exercise NCERT EXEMPLAR PROBLEMS (OBJECTIVE TYPE QUESTIONS)|16 Videos
STATISTICS
KUMAR PRAKASHAN|Exercise NCERT EXEMPLAR PROBLEMS (FILLERS)|6 Videos
STATISTICS
KUMAR PRAKASHAN|Exercise TEXTBOOK ILLUSTRATIONS FOR PRACTICE WORK|19 Videos
SETS
KUMAR PRAKASHAN|Exercise QUESTION OF MODULE|28 Videos
STRAIGHT LINES
KUMAR PRAKASHAN|Exercise Question of Module (Knowledge Test :)|18 Videos

Similar Questions

Explore conceptually related problems

The mean and standard deviation of a random variable X are 10 and 5 respectively. Match the following.

Mean and standard deviation of 100 observations were found to be 40 and 10, respectively . If at the time of calculation two observation were wrongly taken as 30 and 70 in place of 3 and 27 respectively, find the correct standard deviation.

The mean and standard deviation of a group of 200 candidates are 40 and 15 respectively. Later on it was found to that one observation 43 was incorrectly copied down as 34. find the correct mean and standard deviation.

Mean and standard deviation of the random variable X are (7)/(3) and (14)/(9) respectively. Then find value of n and p.

Find the sum of all three digit numbers which are multiples of 11.

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations

The first and the last term of an AP are 7 and 49 respectively. If the sum of all its terms is 420, find the common difference.

Find the sum of all three digit natural numbers divisible by 7

KUMAR PRAKASHAN-STATISTICS-NCERT EXEMPLAR PROBLEMS (SHORT ANSWER TYPE QUESTIONS)

Find the algebraic sum of the deviations of all the observations from ...
Text Solution
|
Find the standard deviation of the first n natural numbers.
Text Solution
|
the mean and standard deviation of some data for the time taken to com...
Text Solution
|
Mean and standard deviation of the random variable X are (7)/(3) and (...
Text Solution
|
Two sets each of 20 observations , have the same standard deviation 5....
Text Solution
|
The frequency distribution : Where A is a positive integer , ha...
Text Solution
|
For the frequency distribution: Find the standard distribution ...
Text Solution
|
There are 60 students in a class . The following is the frequency dist...
Text Solution
|
The mean life of a sample of 60 bulbs was 650 hours and the standard d...
Text Solution
|
Mean and standard deviation of 100 items are 50 and 4, respectively . ...
Text Solution
|
If for a distribution sum(x-5) = 3, sum(x - 5)^2 = 43 and the total nu...
Text Solution
|
Find the mean variance of the frequency distribution given below :
Text Solution
|
Calcualte the mean deviation about the mean for the following frequenc...
Text Solution
|
Calcualte the mean deviation from the median of the following data :
Text Solution
|
Determine the mean and standard deviation for the following distributi...
Text Solution
|
The weights of coffee in 70 jars is shown in the following table: ...
Text Solution
|
Determine mean and standard deviation of first n terms of an A.P. whos...
Text Solution
|
Following are the marks obtained , out of 100 by two students ravi and...
Text Solution
|
Mean and standard deviation of 100 observations were found to be 40 an...
Text Solution
|
While calculating the mean and variance of 10 readings, a student wron...
Text Solution
|