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Mathematics & Economics

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# Statistics - sampling (Essay Sample)

Instructions:

Measure your pulse rate for one minute and post your rate in a discussion board message. You need to do this at the very beginning of the module and then return later to use this data to answer the following questions. Please note: All students in the class should be considered the population.
-Compute the population means pulse rate.
-Obtain a simple random sample of n=4 students (select from the initial discussion board messages containing pulse rates) and compute the sample mean. Does the sample mean equal the population mean?.
-Obtain a second simple random sample of n=4 students and compute the sample mean. Does the sample mean equal the population mean?
-Are the sample means the same? Why?
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Content:

Statistics: sampling
Name
Institution
Date of submission
The population mean pulse rate
Using a population of ten students, the following results are obtained;
54.5,59,66,72.1,57,58,70,62,60,61.2.
The populations mean pulse rate is computed as follows;
QUOTE = 61.98
Obtain a simple random sample of n= 4 students (select from the initial discussion board messages containing pulse rates) and compute the sample mean. Does the sample mean equal the populations mean?
When I obtain a simple random sample of n=4 students i.e.
54.5, 66, 57, 62;
The sample mean will be
QUOTE =59.875
The sample mean is not exactly equal to the population mean because there is a marginal difference of 2.105.
Obtain a second simple random sample of n=4 students and compute the sample mean. Does the sample mean equal the populations mean?
When I obtain a second random sample of n=4 students i.e.
59, 72.1, 61.2, 58
The sample mean will be
QUOTE = 62.575
The sample mean is not exactly equal to the population mean because there is a marginal differenc...

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