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Unfortunately there will be a little bit of work to this and few will consider the next page to be fun. facts about steroids, fake steroid pictures, bodybuilding exercises, steroids for sale perscription, beast anabolic activator, steroid synthesis, anabolic steroid cycle, anabolic steroid side effects, psychological effects of anabolic steroids, steroid effects, steroid faq guru, teenage bodybuilding, teen bodybuilding gallery, steroid use in pro sports, bodybuilding women gallery, mexican anabolic steroids, test 400 steroids, steroid comparison chart, facts on anabolic steroids, anabolic supplements, steroid weight gain, steroid abuse photos, fake anabolic steroids Bodybuilding exercises. It is very important though and necessary to understanding the JAMA study, as well as many other scientific or medical studies. When dealing with small numbers of subjects, chance becomes very important and must be considered. Let's say for example that usually 1/4 of men are fast gainers, 1/2 are average, and 1/4 are slow gainers. facts about steroids, fake steroid pictures, bodybuilding exercises, steroids for sale perscription, beast anabolic activator, steroid synthesis, anabolic steroid cycle, anabolic steroid side effects, psychological effects of anabolic steroids, steroid effects, steroid faq guru, teenage bodybuilding, teen bodybuilding gallery, steroid use in pro sports, bodybuilding women gallery, mexican anabolic steroids, test 400 steroids, steroid comparison chart, facts on anabolic steroids, anabolic supplements, steroid weight gain, steroid abuse photos, fake anabolic steroids Muscle fitness. While no actual numbers exist, let's say that for a given program using beginners, fast gainers will add 15 lb. of muscle in 8 weeks, average gainers will add 10 lb. , and slow gainers will add 5 lb. facts about steroids, fake steroid pictures, bodybuilding exercises, steroids for sale perscription, beast anabolic activator, steroid synthesis, anabolic steroid cycle, anabolic steroid side effects, psychological effects of anabolic steroids, steroid effects, steroid faq guru, teenage bodybuilding, teen bodybuilding gallery, steroid use in pro sports, bodybuilding women gallery, mexican anabolic steroids, test 400 steroids, steroid comparison chart, facts on anabolic steroids, anabolic supplements, steroid weight gain, steroid abuse photos, fake anabolic steroids Steroids for sale perscription. How do we describe this variation? We can take an average of everybody and in this case it happens that the average is 10 lb. of muscle gain. But some gain more, some gain less. There is a statistical formula which we need not know, but from the data for each person lets us calculate a number that represents the variability, called the standard deviation. About 2/3 of people will be within one standard deviation of the average, and about 95% will be within two standard deviations of the average. In our example, the standard deviation is 4. 3 lb. So it is quite common that one person will gain as much as 4. 3 lb. more or less than average, but quite uncommon for someone to be different from the average by more than twice that (8. 6 lb. ) This is just to give you an idea of what a standard deviation is. Hang on, it gets easier!So let's say that we do a study with 10 people in each group to find out whether Supplement X gives better gains than placebo. When we are done, the X group gained a little more on average than the placebo group. We need to know if it's reasonable to believe that could have just happened by chance. If so then we do not know whether X works or not. A statistician can take the standard deviations of each group, the number of people in each group, and the difference in the average gains, and tell you how likely it is that chance could have given that difference. If his math says there's less than a 5 percent chance of the difference happening by luck, this is called a "significant" increase. This is very important: "Significant" has nothing to do with whether a change is important or how large the measured change is.
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