Q.2. The number examined , the meanweight and standard deviation in each group of examination by two medical examiners are given below . calculate mean and standard deviation of both the group taken together .
Medical examiner number examined mean weight (lbs) standard deviation (lbs)
A 50 113 6.5
B 60 120 8.2
Group | Number of Medical Examiners (N) | Mean Weight ( | Standard Deviation ( |
A | N1 = 50 |
|
|
B | N2 = 60 |
|
|
)
