Observational or Paired Data??
A health club is interested in finding out which of two brands of aerobic exercise equipment provides a more vigorous workout. They purchase 10 machines of each type and for five days between 9 and 12 AM they measure the average pulse rate of each person who is working out on one of these 20 machines. This is an example of
1.An experiment
2.An observational experiment
3.A paired data experiment
4.None of the above
By measuring the average pulse rate, it shouldn’t be an observational experiment.
As the 10 machines from two brands are probably considered as identical, it shouldn’t be a paired data experiment.
Without clear idea how "an experiment" is defined, I think it might not be an experiment since the data may not provide good evidence to accept or reject the possible hypothesis, which is not stated, that the machines are not significantly different because it includes other variables from different people, different number of people, and different usage levels of the machines, but a selected time segment.
- Our sponsor links have been Verified -
August 26, 2009 - 6:00 pm
By measuring the average pulse rate, it shouldn’t be an observational experiment.
As the 10 machines from two brands are probably considered as identical, it shouldn’t be a paired data experiment.
Without clear idea how "an experiment" is defined, I think it might not be an experiment since the data may not provide good evidence to accept or reject the possible hypothesis, which is not stated, that the machines are not significantly different because it includes other variables from different people, different number of people, and different usage levels of the machines, but a selected time segment.
References :