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We looked at the effect of emotions on heart rate. We did this by taking our resting heart rate with no stimulation, then taking our heart rate while watching scary, funny, and sad video clips.
Resting heart rates:

 
Terrible2s
Lili

Mean BPM
80.9
72.3

Standard deviation
5.9
4.2

Scary video heart rates: www.youtube.com/watch

 
Terrible2s
Lili

Mean BPM
65.1
45.3

Standard deviation
122.0
122.3

Funny video heart rates: www.youtube.com/watch

 
Terrible2s
Lili

Mean BPM
45.9
48.7

Standard deviation
91.4
69.1

Sad video heart rates: www.youtube.com/watch

 
Terrible2s
Lili

Mean BPM
75.0
71.9

Standard deviation
45.2
13.9

We found that our heart rates were lower while watching scary and funny movies, but that our heart rates didn't change much while watching the sad video. However, the standard deviations seemed to change drastically from the resting heart rate for every trial. It seemed to get higher during the funny and scary videos, especially the scary videos. During the sad video, it seemed closer to what it was during the resting trial, but was still higher.
Although we noticed trends, we can't fairly draw any conclusions from our data. This is partially due to our lack of trails, possible distractions, and our personal feelings toward the videos. We had trouble finding consistencies in the data, mostly due to individual variation.
-Terrible2s, Lili