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.
Eating grapefruit or grapefruit juice before or with every meal; Most variations also cut calories, some to as low as 800 calories per day. On the diet, you also drink 8 glasses of water and 1 cup of coffee daily. Level of Effort: Medium. Some versions of the grapefruit diet are really strict. Others are fairly flexible. Either way, you'll need to have a taste for the tart fruit. Limitations: These depend on what version of the grapefruit diet you do. Some versions curb carbs and bulk up on high-fat, high-cholesterol foods or cut calories drastically. Others just ask you to eat grapefruit at or before every meal, and you can pretty much eat whatever you want otherwise.