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Marks obtained out of 50 by …

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Marks obtained out of 50 by 100 to student in physics test are given in the frequency table below Marks : 15 20 22 24 25 30 33 38 45 Frequency :5 8 11 20 23 18 13 3 1 Find the mean
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Khushi... Sharma...? 4 months, 1 week ago

Answer:- Marks (x) Frequency (f) fx  155 75  208 160  2211 242  2420 480  2523575  3018 540  3313 429  283 84  45145  Σf=5+8+11+20+23+18+13+3+1     =102 Σfx=75+160+242+480+575+540+429+84+45        =2630Average mark(xˉ)=ΣfΣfx​=1022630​=25.78
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