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HAAD RHIA Exam
Registered Health Information Administrator (RHIA) (Page 27 )

Updated On: 26-Jan-2026
Page 27 of 367
PDF with 1832 Questions

The data displayed in the histogram below could best be described as

  1. negatively skewed.
  2. positively skewed.
  3. evenly distributed
  4. normally distributed

Answer(s): A



The primary difference between an experimental (randomized) clinical trial and other observational study designs in epidemiology is that in an experimental trial, the

  1. study is prospective.
  2. investigator determines who is and who is not exposed.
  3. study is case controlled.
  4. study and control maps are selected on the basis of exposure to the suspected causal factor.

Answer(s): B



Looking at the data represented in the scatter diagram below, you would conclude that there is

  1. no correlation between Variable A and Variable B.
  2. a positive correlation between Variable A and Variable
  3. a negative correlation between Variable A and Variable B.
  4. a cause and effect relationship between Variable A and Variable B.

Answer(s): B



You are trying to improve communications with your staff by posting graphs of signs statistics on the employee bulletin board. You recently calculated the percentage of employees spend on each of six major tasks. Because you would like the employees to appreciate each task as a percentage of their whole day, you will post these figures using a

  1. line graph.
  2. bar graph.
  3. scatter diagram.
  4. pie graph.

Answer(s): D



What conclusion can you make from the pie graph below?

  1. A pie graph should not be used because there are too many categories for effective display.
  2. A pie graph should not be used, because the data are representational instead of quantitative
  3. A pie graph should not be used, because the data are qualitative instead of quantitative.
  4. A pie graph is a good choice and is often used to display this kind of data.

Answer(s): A



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