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Emily & Kristel

Heart rates (BPM) without an effect (resting) rounded to 3s.f.:
Kristel: 63.5 , SD: 3.2
Emily: 100, SD: 40.6

Listening to Music (Daft Punk, heavy bass, fast speed):
Hypothesis: that listening to music with a fast tempo and heavy bass will increase Kristel's heart rate.
Kristel: 77.5, SD: 3.70

Listening to Music (Ukulele, soothing song):
Hypothesis: ukulele music will calm Emily down and slow her heart rate.
Emily: 103 SD: 7

Eating: 
Hypothesis: we thought eating would increase heart rate.
Emily: 109 SD: 11.2

Irregular Breating: 
Hypothesis: that irregular breathing would increase heart rate.
Kristel: 52.7 SD: 55.9

Yoga (after doing Yoga):
Hypothesis: that heart rate would be more stable-- or less variance.
Emily: 87.4 SD: 8.6

Talking (emotional issues):
Hypothesis: that it would calm Emily and lower her heart rate.
Emily: 109 SD: 16.7 (however, the graph showing beats/time looked more constant than any other graph for Emily; we believe the SD was actually lower)

We did not think about standard deviation in heart rate at all when we hypothesized for each condition. However, we found that in each experiment, SD that mattered/showed change more often than heart rate. Emily in general had a very high heart rate-- around 100 bpm-- though her variance changed (drastically reduced) when she did things that we hypothesized would calm her down. With Kristel, our hypthesis about music was true: her heart rate increased with techno music. But the other experiment done on Kristel disproved our hypothesis: when she breathed irregularly, her heart rate actually dropped from her resting heart rate-- however, the standard deviation sky rocketed. The only experiment that slowed Emily's heart rate was after having done yoga (87.4). Every experiment done on Emily slowed her SD. But the experiments she did that were more emotional (not so much to do with physically moving her whole body like yoga), her heart rate was still 100 bpm or above.