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Calculate standard Deviation from the furowing tata class intervaleFrequency20-25 25-3030-3535-4040-4545-50 |
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Answer» X MID point (x) Frequency (F) i=class interval width A=22.5 Assumed mean u= ix−A fu0-5 2.5 3 5 22.5 -4 -12 5-10 7.5 5 5 22.5 -3 -15 10 -15 12.5 7 5 22.5 -2 -14 15-20 17.5 8 5 22.5 -1 -8 20-25 22.5=A 10 5 22.5 0 0 25-30 27.5 11 5 22.5 1 11 30-35 32.5 14 5 22.5 2 28 35-40 37.5 19 5 22.5 3 57 40-45 42.5 15 5 22.5 4 60 45-50 47.5 13 5 22.5 5 65 Σf=105 |
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