The mean of five observations is 15 . If the mean of first three observations is 14 and that of the

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The mean of five observations is 15 . If the mean of first three observations is 14 and that of the last three observations is 17 , then the third observation is\

Professor PC Thomas Classes · Answer

(c): Let $x_{1}, x_{2}, x_{3}, x_{4}, x_{5}$ are five observations.\ $\frac{x_{1}+x_{2}+x_{3}+x_{4}+x_{5}}{5}=15$ \Concept Applied-Mean for ungrouped data is $\bar{x}=\frac{x_{1}+x_{2}+\ldots x_{n}}{n}=\frac{\sum x_{i}}{n}$