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Chapter 14.3 ques no 1

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Chapter 14.3 ques no 1

Posted by Ashish Kumar 7 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Vivek Sankpal 7 years, 3 months ago

Mode maximum class frequency is 20 modal class is 125-145 Mode=l+(f1+f2/2f-f0-f2)h By solving it we get Mode = 135.77 units

2Thank You

Vivek Sankpal 7 years, 3 months ago

Median = First find cumulative frequency(cf) i.e 4,9,22,42,56,64,68 Now n=68 n/2=68/2=34 Cf greater than 34 is 42 Median class is 125-145 Now l=125,cf=22,f=20,h=20 Median =l+<(n/2-cf /f) h =125(34-22/20)20 =125+12 Median =137 units

2Thank You

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