the mean marks scored 50 students in 80. on verification of data ,it was found that the marks of one student were shown as 73 insted of. if corrected find the new mean.
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༒ Answer ༒
ℑ 50 = 39
= 39 (50) = 1950
ℭ
= 1950 – +
ℭ
= 1950 – 23 + 43
ℭ = 1970
= 1970/50
ℭ = 39.4
, 39.4
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