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what does the following statistical data mean? For experimental group fear during and after IV insertion and the mean and standard deviation of the 2.645

what does the following statistical data mean? For experimental group fear during and after IV insertion and the mean and standard deviation of the 2.645 0.978 (during) 0.687 0.624 (after), as compared to the mean of control group 3.291 1.270 and after 1.645 0.811

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