Question: 2. Does exercise help lose weight? An observational study of 120 adults established a link between exercise (vigorous exercise, moderate exercise, and no exercise) and

$2. \"Does exercise help lose weight?\" An observational study of 120$

2. \"Does exercise help lose weight?\" An observational study of 120 adults established a link between exercise (vigorous exercise, moderate exercise, and no exercise) and weight loss (measured in kg). (9 marks) a) What is the explanatory variable in this study? (1 mark)

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