Examlex
In a multiple regression analysis involving 6 independent variables and a sample of 19 data points the total variation in y is SST = 900 and the amount of variation in y that is explained by the variations in the independent variables is SSR = 600. The value of the F-test statistic for this model is:
Scientific Inquiry
The process of developing explanations about the natural world through observations, experiments, and evidence collection.
Control Group
A group in an experiment that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.
Experimental Group
The experimental group in a study is the group that receives the treatment or intervention being tested, allowing researchers to assess the effect of the treatment.
Single-Blind
An experimental procedure where the participants do not know which group (control or experimental) they are in, to reduce bias.
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