Q15 of 40 Page 926

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

we make the following table from the given data:


Therefore,



Thus, the required mean deviation about the mean is



More from this chapter

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13

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

























Xi



10



15



20



25



30



35



40



45



Fi



7



3



8



5



6



8



4



9



 14

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





















Mark



0-10



10-20



20-30



30-40



40-50



50-60



Number of Students



6



8



14



16



4



2



 16

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























class



30-40



40-50



50-60



60-70



70-80



80-90



90-100



Frequency



3



7



12



15



8



3



2



 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