Question

same measurement computed from n1 and n2 values?! what does it mean?!

Answer 1

There are two groups of data.

one group has n1 values. and its mean is x1 bar.

other group has n2 values. and its mean is x2 bar.

Now, it has given the formula to find the mean( x bar) of both groups combined.

Answer 2

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There are two groups of data.

one group has n1 values. and its mean is x1 bar.

other group has n2 values. and its mean is x2 bar.

Now, it has given the formula to find the mean( x bar) of both groups combined.

HOPE SO IT WILL HELP......