Math, asked by sash1506, 9 months ago

pls help me to find the answer

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Answered by snehakayasth123

1

Step-by-step explanation:

x f xf

115 6 690

125 25 3125

135 48 6480

145 72 10440

155 116 17980

165 60 9900

175 38 6650

185 22 4070

195 13 2535

N=400 Exf=61870

NOW,

Mean=Exf÷N

=61870÷400

=154.675

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