1. data analysis: 1) descriptive statistics, data analysis, common features of the sample group. Present value distribution frequency percent average and standard deviation 2.) foothills, statistical inference) 2.1 is used to compare the differences of the average within the Group and control group trials before trial and after trial, using statistics, 95% CI Paired-t-test and 2.2) and is used to compare the differences between experimental groups, average, and control group before and after the experimental trials using 95% CI Independent-t-test and statistics.
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