Can exercise improve your mood? A researcher was interested in whether there was a relationship between the number of hours exercised and the mood for a sample of six individuals. These individuals were asked to report the number of hours they exercised each week and they were also given a survey on their mood. The survey scores ranged from 0 to 150, where higher scores were reflective of a happier and more positive mood. The sample data is given in Table 2.13.

Table 2.13

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Mood Score (1-150) and the Number of Hours Spent Exercising for a Random Sample of Six Individuals Mood Score Number of Hours Exercising (Per Week) 105 75 90 60 35 20 15 10 10 8 3 6