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Refer to the data set of body temperatures in degrees Fahrenheit given in the accompanying table and use software or a calculator to find the mean and median. Do the results support or contradict the common belief that the mean body temperature is 98.6​F?

Sagot :

The mean of the dataset is the average, while the median is the middle element.

  • The mean and the median of the given dataset is 98.2
  • The results support the common belief that the mean body temperature is 98.6F

The mean of the dataset is calculated using:

[tex]\bar x = \frac{\sum x}{n}[/tex]

So, we have:

[tex]\bar x = \frac{99.2+ 99.2 +98.2+............+97.7}{48}[/tex]

[tex]\bar x = \frac{4715}{48}[/tex]

[tex]\bar x = 98.2[/tex]

The median position is:

[tex]Median = \frac{1}{2}(n + 1)[/tex]

[tex]Median = \frac{1}{2}(48 + 1)[/tex]

[tex]Median = \frac{1}{2}(49)[/tex]

[tex]Median = 24.5[/tex]

This means that the median is the average of the 24th and 25th element

Using the sorted dataset, we have:

[tex]Median = \frac{1}{2}(98.2 + 98.2)[/tex]

[tex]Median = 98.2[/tex]

Because the calculated mean and the common belief (98.6) are close, then we can conclude that the results support the common belief that the mean body temperature is 98.6F

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