Question

Determine the test used for the following problem: Does the standard deviation in the weight loss of dieters who follow the low-carb diet differ from the standard deviation of the dieters who follow the low-fat diet?

Answer 1

Yes.....

we aimed to estimate the long-term (6 or more months) effect of low-carbohydrate diets compared with those of low-fat diets on body weight, waist circumference, and metabolic risk factors, including systolic and diastolic blood pressure, total cholesterol, LDL cholesterol, high density lipoprotein (HDL) cholesterol, ratio of total to HDL cholesterol, triglycerides, fasting blood glucose, and serum insulin. In addition, we explored the possible underlying reasons (i.e., study duration, diabetic status, age, gender, and levels of carbohydrate intake in diets) for the observed heterogeneity of effect sizes.