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  3. a. the weight of 8 persons (in lb) are: 138,143,14

a. The weight of 8 persons (in LB) are: 138,143,141, 139, 152, 148, 160 and 267....

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Statistics

a. The weight of 8 persons (in LB) are: 138,143,141, 139, 152,148, 160 and 267. Find the average weight using the suitable formof average. Give reason for your choice.

b.

126

127

156

167

189

234

302

117

134

The above data consists of two outliers 234 and 302, due towhich the A.M. is greatly affected. Treating outliers as one groupand remaining observations as second group compute thefollowing:

i. arithmetic mean of individual groups and combined group

ii. standard deviations of individual groups and combinedstandard deviation of both groups, also interpret your answer

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