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A data set of n observations has mean 2 x. While another data set of 2n observations hasmean x . Then the mean of the combined data set of 3n observations will be :(a) x (b) X (c) 4/5 x (d) 3x/5 |
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Answer» Answer: 4x/3 Step-by-step explanation: n OBSERVATIONS mean = 2x sum of n observations =2nx 2N observations mean =x sum of 2n observations =2nx TOTAL n+2n=3n observations total sum = 2nx+ 2nx =4nx mean=4nx/3n = 4x/3 hope this helps |
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