Question

Find the mean deviation about the mean for the data 
Height of cmsNumber of boys
95-1059
105-11513
115-12526
125-13530
135-14512
145-15510

Medium

Solution

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The following table is formed
Height of cmsNumber of boysmid-point 
95-105910090025.3227.7
105-11513110143014.3198.9
115-1252612031205.3137.8
125-1353013039004.7141
135-14512140168014.7176.4
145-15510150150024.7247
Here 


Video Explanation

Solution to Question ID 418429
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