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Find mean of each frequency distribution …

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Find mean of each frequency distribution (5 - 14):- Class interval - 50-70, 70-90, 90-110, 110-130, 130-150, 150-170 Frequency - 18,12,13,27,8,22

Posted by Sahin Akhtar 3 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Ayushi Gupta 3 years, 7 months ago

Xi = 60, 80, 100, 120, 140, 160 sigmaFi = 180 Di (Xi-A) = -60, -40, -20, 0,20, 40 Ui (Di /h) = -3, -2, -1, 0, 1, 2, Sigma FiUi = -39 Let A be 120... Mean = A + (sigmaFiUi / sigmaFi) Mean = 120 + (-39/180) Mean = 120 - 0.217 =>*Mean = 119.783*

0Thank You

. . 3 years, 7 months ago

Mean = 112.2

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ANSWER

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CBSE > Class 10 > Mathematics

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CBSE > Class 10 > Mathematics