Q1 of 40 Page 935

Find the mean, variance and standard deviation for the numbers 4, 6, 10, 12, 7, 8, 13, 12.

Given data: 4, 6, 10, 12, 7, 8, 13, 12

To find: MEAN


We know that,






To find: VARIANCE





= 9.25


To find: STANDARD DEVIATION




= 3.04


More from this chapter

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17

Find the mean deviation about the median for the following data :





















class



0-10



10-20



20-30



30-40



40-50



50-60



Frequency



6



7



15



16



4



2



 18

Find the mean deviation about the median for the following data :





















class



0-10



10-20



20-30



30-40



40-50



50-60



Frequency



6



8



11



18



5



2



 2

Find the mean, variance and standard deviation for the first six odd natural numbers.

 3

Using short cut method, find the mean, variation and standard deviation for the data :























xi



4



8



11



17



20



24



32



fi



3



5



9



5



4



3



1