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Pulse Rate Maths

This is because people who smoke and drink frequently, take little exercise and have a poor diet will usually have a weaker heart. As a result it takes more cycles to pump the same amount of blood around the body as a healthy heart thus leading to a higher pulse rate. .
             To decide which students have a healthy or an unhealthy lifestyle I asked them some questions in the questionnaires. From the answers given I determined who was healthy or unhealthy. If they fitted into 4 or more of these criteria I deemed them unhealthy. If they had fewer than 4 they were deemed healthy. The criteria was.
             They smoked.
             They drank alcohol quite often .
             They used illegal recreational drugs.
             Do less than 5 hours of demanding exercise a week.
             They are obese or underweight.
             They don't eat a balanced diet.
             To present the information for my first hypothesis I have chosen to use mean and standard deviation statistics to prove or disprove my hypothesis. .
             .
             Healthy mean= 123.95 Unhealthy mean= 126.77.
             Healthy standard dev.= 9.07 Unhealthy standard dev.= 9.86.
             .
             Standard deviation (sample) = Ö ((1/(n-1)) Σ (xi - xav) ).
             = Ö (1/27) Σ (104-123.95) + (107-123.95) + . ) for the healthy population.
             These results neither prove nor disprove my hypothesis, as both sets of results are too close to make a conclusion. 2.3% is the percentage difference between the means of the two populations. I found this out by:.
             126.77-123.95 = 2.82 = 2.3%.
             123.95 123.95.
             The percentage difference is too small to prove or disprove my hypothesis. Another way of looking at the results is that the difference in the mean of the two populations is less than one third of the standard deviation showing the two populations overlap. From these results it could be argued that unhealthy people do have a higher pulse rate than those who are healthy, as the standard deviation is lower for the healthy people, however in order to prove or disprove this hypothesis I need to take a wider and larger amount of people's pulse rates.


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