Question: For the data in Table 7.15, the mean difference in EORTC QLQC30 physical function domain scores before and after exercise is: A. 9.0 B. 1.0

For the data in Table 7.15, the mean difference in EORTC QLQC30 physical function domain scores before and after exercise is:

A. −9.0 B. −1.0 C. 16.3 D. 61.7 E. 78.0

Table 7.15

EORTC QLQ-C30 physical function scale score Subject (i) Before After 1 2

EORTC QLQ-C30 physical function scale score Subject (i) Before After 1 2 3 66.7 100.0 40.0 60.0 80.0 100.0 45 4 80.0 100.0 5 53.3 86.7 6 80.0 90.3 7 53.3 60.0 8 20.0 46.7 Mean 61.7 78.0

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