Question

Researcher A conducted a study and analysis to determine whether or not there is a true difference in stress levels due to engaging in meditation or not. To test this, Researcher A asked a random selection of participants whether or not they meditated regularly (in order to assign them to the meditators group or non-meditators group) before measuring their current level of stress. Researcher B conducted a study and analysis to determine whether or not meditation is even related to stress. To test this, Researcher B asked a random selection of participants how many minutes they spent meditating each week and then measured their current stress levels.

1.For the researcher who ended up with these results, r(23) = 0.29, p > .05, how many people participated in the study? Must explain/justify your answer for credit. [3 line maximum] 2.Which researcher would be able to accurately state that mediation causes a decrease in stress? Must explain/justify your choice for credit. [3 line maximum]

Answer #1

1. The degrees of freedom for a correlation test are n – 2 and the given degrees of freedom are 23 hence 25 people participated in the study.

2. The researcher B would be able to accurately state that meditation causes a decrease in stress because this researcher is only measuring the direct relationship between meditation and stress levels.

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