Look at the following research article to see how the statistical techniques you have already learned are used in practice:

Watson, J., Kinstler, A., Vidonish III, W. P., Wagner, M., Li, L., Davis, K. G., . . . Daraiseh, N. M. (2015). Impact of noise on nurses in pediatric intensive care units. American Journal of Critical Care, 24(5), 377–384. doi:10.4037/ajcc2015260

Look at Table 2 in the article. Which unit was the quietest on average? Was this unit within the recommended EPA guidelines for workplace sound levels?

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Spearman's p Risk Grade Correlation coefficient Significance (two-tailed) N Correlation coefficient Significance (two-tailed) N Risk 1.000 108 0.156 0.106 108 Grade 0.156 0.106 108 1.000 108