A) \[\bar{x}\]
B) \[\lambda +\bar{x}\]
C) \[\lambda \bar{x}\]
D) None of these
Correct Answer: C
Solution :
\[\bar{x}=\frac{\Sigma {{x}_{i}}}{n}\], \[\Sigma {{x}_{i}}=n\bar{x}\] New mean = \[\frac{\Sigma \lambda {{x}_{i}}}{n}\]\[=\lambda \frac{\Sigma {{x}_{i}}}{n}\]\[=\lambda \bar{x}\].
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