the sum of 20 observations is 300.two observations 13 and 17 are discard them mean or remaining observations is.....
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sum of 20 observations = 300
no. of observations = 20*300 = 6000
discarded nos. are 13 and 17
Now, no. of observations = 6000-(13+17) = 6000-30= 5970
New sum of 18 obervations = 5970/18 = 332 (approx)
no. of observations = 20*300 = 6000
discarded nos. are 13 and 17
Now, no. of observations = 6000-(13+17) = 6000-30= 5970
New sum of 18 obervations = 5970/18 = 332 (approx)
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