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Chapter 1: Q2CQQ (page 1)
Hospitals Which of the following best describes the level of measurement of the numbers 1, 1438, 66, and 413 from Exercise 1: nominal, ordinal, interval, ratio?
The level of measurement is nominal.
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In Exercises 17–20, refer to the sample of body temperatures (degrees Fahrenheit) in the table below. (The body temperatures are from a data set in Appendix B.)
| 1 | 2 | 3 | 4 | 5 | |
| 8 AM | 97 | 98.5 | 97.6 | 97.7 | 98.7 |
| 12 AM | 97.6 | 97.8 | 98 | 98.4 | 98.4 |
Conclusion Given the body temperatures in the table, what issue can be addressed by conducting a statistical analysis of the data.
In Exercises 17–20, refer to the sample of body temperatures (degrees Fahrenheit) in the table below. (The body temperatures are from a data set in Appendix B.).
Conclusion If we analyze the listed body temperatures with suitable methods of statistics, we conclude that when the differences are found between the 8 AM body temperatures and the 12 AM body temperatures, there is a 64% chance that the differences can be explained by random results obtained from populations that have the same 8 AM and 12 AM body temperatures. What should we conclude about the statistical significance of those differences?
Quantitative/categorical DataIdentify each of the following as quantitative data or categorical data.
a. The platelet counts in Data Set 1 “Body Data” in Appendix B.
b. The cigarette brands in Data Set 13 “Cigarette Contents” in Appendix B.
c. The colours of the M&M candies in Data Set 27 “M&M Weights” in Appendix B.
d. The weights of the M&M candies in Data Set 27 “M&M Weights” in Appendix
In Exercises 21–24, refer to the data in the table below. The entries are white blood cell counts (1000 cells,ML) and red blood cell counts (million cells,ML) from male subjects examined as part of a large health study conducted by the National Center for Health Statistics. The data are matched, so that the first subject has a white blood cell count of 8.7 and a red blood cell count of 4.91, and so on.
Subject
| 1 | 2 | 3 | 4 | 5 | |
| White | 8.7 | 5.9 | 7.3 | 6.2 | 5.9 |
| Red | 4.91 | 5.59 | 4.44 | 4.8 | 5.17 |
Source of the Data Considering the source of the data, does that source appear to be biased in some way?
Determine whether the data are from discrete data or continuous data set.
Smartphones Students in a statistics class record the exact lengths of times that they surreptitiously use their smartphones during class
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