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
