CBSE Class 10 Answered
<div>the following table gives the lifetime of 200 bulbs.Calculate the mean life of a bulb by step deviation method</div>
<div>life time [in hrs]: 400-499 500-599 600-699 700-799 800-899 900-999</div>
<div>frequency: 24 47 39 42 34 14</div>
<div>i wanted to check whetjer my answer is correct! pls do it taking values of [A=749.5 and h=200]</div>
<div>plssssss do it with my values </div>
Asked by my3shyll | 16 Jul, 2016, 04:24: PM
Expert Answer
Class size (h)= 100....(Since the class size that is the difference between the upper limit and the lower limit of each class interval is 100)
Here A = 749.5 and h = 100
Answered by Rebecca Fernandes | 17 Jul, 2016, 08:53: PM
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