The best graph to present the summarized data of two qualitative variables is:

When presenting data in a tabular form the following error should be avoided:

The best graph to present the combined data of one qualitative variable and one quantitative discrete is:

Which title most clearly identifies the content of a table presenting hypertension prevalence by age group?

The best graph to present the summarized data of one quantitative continuous and one qualitative variables is:

Which situation represents an inconsistency that should be checked during data cleaning?

A researcher summarizes age in a sample as: mean = 42.3 years, median = 41.8 years, standard deviation = 6.2 years, range = 18–71 years. Which feature of these results should prompt further examination of the age distribution?

A researcher wants to create a variable indicating whether a mother experienced “high” or “low” perceived support. The original questionnaire uses a validated 20-item scale producing a total score from 0 to 80. The researcher defines scores 0–39 as low and 40–80 as high. What processing step is being performed?

A study records the number of antenatal visits. The researcher notices that the minimum is 0 and the maximum is 28. The study population consists of women who delivered in the previous year. What is the most appropriate response to the maximum value of 28?

A study reports education level as Primary, Secondary, and Tertiary. Which descriptive summary is most appropriate for presenting the distribution of this variable?