An interaction occurs when considering the relationship among three or more variables, and describes a situation in which the simultaneous influence of two variables on a third is not additive. The simplest situation is when the effect of each independent variable is completely separate from the other independent variables. The more complicated situation is when the effect of one independent variable depends on another independent variable(s). We are familiar with examples in the area of drugs. A drug X might be desirable for treating a certain condition, but not if you are taking drug Y, because if you do take drugs X and Y together there is a bad consequence from their combination, a bad drug “interaction. The issue of statistical interaction potentially arises when there are two or more independent variables. The issue concerns how the effects of the independent variables cumulate.(Stipa), Your response
Sources of Variance in an Experiment
Watch “ANOVA (Part A) – Sources of Variance in an Experiment” on the YouTube website located at https://www.youtube.com/watch?v=JPjMUeTMOwg&feature=youtube_gdata What are some of the sources of variance in an experiment? Your response
There is a lot of medical research being done on medications, diagnostics, medical equipment, and other technologies besides health care that must be tested before production and utilization. When testing the difference in populations it is almost impossible to test whole populations so samples gathered. There will always be sampling error because of this, which may bring false results. Tests are done to identify if the subject is effective or ineffective. When there are multiple groups, samples, or items that are being tested, it is necessary to use a comparison formula ANOVA because of false results that can occur. This formula compares the variation between groups and within groups. It allows you to conclude if the difference between the groups is more than random variation.
I have to schedule a lot of funraisers throughout the year and sometimes it is difficult to determine which one is effective. I break them down into catagories and time of year. The best is to have seasonal fundraising. Another unique part of fundraising is being aware of the population and community interests. You can have a false positive fundraising event on a schedule if you were not thinking about the time of year because if one fundraiser made a 1,000 dollars profit in the summer but did not do so well in the fall and nothing was changed in that fundraiser, then it is important to take into consideration the time of year. In this buisness it is good to analyze results by catagories of community, time, and community interests. Each fundraiser acts like a sample test to determine if communities are interested in it or not through the year. Your response
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