Question

find mean by step deviation method

no of bottles. no of bottles
50—52 20
53—55 120
56—58 105
59—61 125
62—64 30
please find

Answer 1

(20+120+105+125+30)/5

=430/5=86

hope it help you

Answer 2

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$\huge{Answer }$ $\implies{57.062}$

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