Which Is Most Effective in Improving Flexibility

question 29

Multiple Choice

Which is most effective in improving flexibility?

• A) stretching when muscles feel tight
• B) stretching once a month
• C) stretching a few muscles each time
• D) stretching major muscle groups regularly

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Definitions:

Wilcoxon Rank Sum Test

A nonparametric statistical test used to compare two independent groups to assess whether their populations have the same distribution.

Alternative Hypothesis

The hypothesis that proposes a difference or effect, in contrast to the null hypothesis, which assumes no effect or difference.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, often denoted by alpha (α).

Alternative Hypothesis

A hypothesis that contradicts the null hypothesis, indicating that there is a significant difference between specified populations.