What does a large standard deviation indicate in a set of patient measurements?
Correct answer: A. Values are widely spread around the mean
- A. Values are widely spread around the mean
- B. Values are closely grouped around the mean
- C. The sample contains no unusual values
- D. The mean is equal to the median
Explanation
Standard deviation describes the spread of observations around the mean. A large value indicates greater variability, whereas closely grouped measurements produce a smaller standard deviation.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Epidemiology and Biostatistics
Epidemiology examines the distribution and causes of disease by person, place and time, using measures such as incidence, prevalence, mortality and case-fatality rates. Biostatistics covers data presentation, sampling, averages, variability, probability and interpretation of study results, while distinguishing association from causation.
Practise Epidemiology and Biostatistics
50 free Epidemiology and Biostatistics MCQs from Community Health Nursing, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Community Health Nursing questions like this
Community Health Nursing is on 9 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Epidemiology and Biostatistics questions
The ages of four patients are 20, 30, 40 and 50 years. What is the arithmetic mean age?
During a food-poisoning outbreak, 40 of 200 people who ate at a wedding become ill. Which measure is represented by 40 divided by 200, multiplied by 100?
Which epidemiological measure expresses the number of deaths in a population during a specified period?
A nurse wants to display the number of patients in different blood groups at a health centre. Which graph is most suitable?
A researcher in a rural health centre writes the names of all eligible households on slips, mixes them, and draws 30 slips. Which sampling method is being used?
For a maternal health survey, a researcher divides women into urban and rural groups, then randomly selects participants from each group. Which sampling method is used?