When a weighted mean is used, the variance of the weighted sample is different from the variance of the unweighted sample. The biased weighted sample variance is defined similarly to the normal biased sample variance: where, which is 1 for normalized weights.or example, consider the weighted mean of the point [1 0] with high variance in the second component and [0 1] with high variance in the first component.
Grapefruit Diet: Foods Allowed. All meat (except for processed meat), eggs, cheese, nuts. Red onions, bell peppers, radishes, broccoli, asparagas, zucchini, mushrooms, cucumbers, green oinions, leaf spinach, cabbage, tomatoes, green beans, lettuce, coleslaw, green beans, dill pickles. Mayonnaise, low carb dressing.
And a new book called The Grapefruit Solution (Linx, 2004) takes yet another approach. The one common theme throughout these plans: Dieters eat grapefruit, drink grapefruit juice, or swallow grapefruit capsules at or before every meal. Grapefruit is chock-full of vitamin C, fiber, and small amounts of other nutrients and disease-fighting chemicals-so there's no doubt that it's a great food choice.