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Find the median of the following data 20-40,40-60,60-80,80-100 frequency 7,15,20,8 |
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Answer» Answer: search What would you like to ASK? 10th Maths Statistics Median of Grouped Data Find the median of the FOLL... STATISTICS avatar Asked on December 20, 2019 by Sherine Mallick Find the median of the following data: Class interval 0−20 20−40 40−60 60−80 80−100 100−120 120−140 Frequency 6 8 10 12 6 5 3 EASY Share Study later ANSWER ClassInterval Frequency c.f. 0−20 6 6 20−40 8 14 40−60 10 24 60−80 12 36 80−100 6 42 100−120 5 47 120−140 3 50 N=50 Here, N=50, then 2 N
= 2 50
=25 ∴ Median class =60−80 We have, l=60,c.f=24,f=12 and h=20 Median=l+ f 2 N
−c.f
×h =60+ 12 25−24
×20 =60+1.66 =61.66 |
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