Holistic Health. Weight gain that occurs when your weight increases without increasing your food intake has many causes. Thyroid hormone deficiency may slow metabolism, resulting in weight gain from fat gain and water retention.
used when the range is large and classes several units in width are needed ungrouped frequency distribution used for numerical data and when range of data is small; each class is only one unit
An important issue influencing the choice of the most appropriate sampling method is whether a sampling frame is available, that is, a listing of all the units that compose the study population. If a sampling frame does exist or can be compiled, probability sampling methods can be used.