Question 1

Which of the following best describes the main purpose of learning statistics in the health sciences, as outlined in the course introduction?

Accepted Answer

To better understand disease promotion, risk factors, and evaluate the effectiveness of interventions.

Question 2

A researcher wants to measure the effect of a new medication on blood pressure by randomly assigning patients to either the medication or a placebo group. Which research design is being used?

Accepted Answer

Experimental study

Question 3

Which of the following is an example of a qualitative (categorical) variable?

Accepted Answer

Type of health insurance (public, private, none)

Question 4

A study collects the number of cigarettes smoked per day by participants. What type of variable is this?

Accepted Answer

Quantitative (numerical)

Question 5

Which of the following best describes the difference between descriptive and inferential statistics?

Accepted Answer

Descriptive statistics summarize data; inferential statistics draw conclusions about populations from samples.

Question 6

A hospital administrator wants to know the average length of stay for patients in the past year. Which statistical analysis is most appropriate?

Accepted Answer

Descriptive statistics

Question 7

In the research process, which step comes immediately after defining the research question?

Accepted Answer

Choosing the research design

Question 8

A study aims to estimate the proportion of adults who smoke in a city by surveying a random sample. What type of analysis is most appropriate?

Accepted Answer

Inferential statistics

Question 9

Which of the following is NOT a component of the three main research components discussed in the course?

Accepted Answer

Data fabrication

Question 10

A researcher records the temperature of patients before and after surgery. What is the best level of measurement for this variable?

Accepted Answer

Interval

Question 11

Which of the following best describes an ordinal variable?

Accepted Answer

A variable with categories that have a natural order but no consistent difference between them.

Question 12

A study collects data on the ethnicity of patients. What type of variable is this?

Accepted Answer

Nominal

Question 13

Which of the following is an example of a ratio variable?

Accepted Answer

Number of hospital visits

Question 14

A researcher wants to compare the mean cholesterol levels between two groups: those who exercise regularly and those who do not. Which statistical test is most appropriate?

Accepted Answer

Independent samples t-test

Question 15

Which of the following best describes the process of statistical analysis?

Accepted Answer

Collecting, organizing, summarizing, and interpreting data to draw conclusions.

Question 16

A study measures the number of times patients visit a clinic in a year. What is the best level of measurement for this variable?

Accepted Answer

Ratio

Question 17

Which of the following is a key reason for understanding variable measurement in research?

Accepted Answer

It determines which statistical tests are appropriate for data analysis.

Question 18

A researcher wants to know if there is a relationship between gender (male/female) and the presence of hypertension (yes/no). Which statistical test is most appropriate?

Accepted Answer

Chi-square test

Question 19

Which of the following best describes an experimental research design?

Accepted Answer

The researcher manipulates one or more variables and observes the effect on another variable.

Question 20

A study records the pain level of patients after surgery using a scale from 1 (no pain) to 10 (worst pain). What type of variable is this?

Accepted Answer

Ordinal

Applied Statistics for the Health Sciences: Introduction and Foundations

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