Eight patients underwent an operation in a hospital. Measurement of weight (kg), duration of operation (minutes), and blood loss (ml) were taken. The hospital authorities would like to know whether the blood loss was related to weight and duration of operation. The data are as follows: (Hint: Use all concepts you have learned)
|
Weight (X1)
|
Duration of Operation (X2)
|
Blood loss (Y)
|
|
44
42
70
45
50
51
36
53
|
108
85
88
114
110
101
97
121
|
505
492
472
506
484
492
515
466
|
1. Perform a multiple linear regression and describe your finding.
2. Examine the model fit.
3. Perform a residual analysis