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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

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BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

One sample has n = 5 scores with a mean of M = 4. A second sample has n = 3 scores with a mean of M = 10. If the two samples are combined, what is the mean for the combined sample?

To determine

To Find: The mean of the combined sample.

Explanation

Given info:

A sample of 5 scores has mean 4 while the second sample has 3 scores and a mean value 10.

Calculations:

Calculate sum of scores, X1 and X2 for the two samples as:

X1=n1×M1=5×4=20

Similarly,

X2=

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