Let be a variable with the values 1, 2, 3,,,,,, . Let =

+

, = 1, 2,,,, and , are constants. Let be t

Let be a variable with the values 1, 2, 3,,,,,, . Let =

+

, = 1, 2,,,, and , are constants. Let be the

variable with the values 1, 2,,,, . Show that —= + —.

Here —, y— denotes the arithmetic means of the variables and

respectively.​

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