Question 1

Which of the following best describes the main purpose of learning statistics in health sciences practice?

Accepted Answer

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

Question 2

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

Accepted Answer

Choosing the research design

Question 3

A researcher wants to measure the effect of a new drug on blood pressure. Patients are randomly assigned to receive either the drug or a placebo, and their blood pressure is measured before and after treatment. What type of research design is this?

Accepted Answer

Experimental

Question 4

Which of the following is a quantitative variable?

Accepted Answer

Temperature of patients after surgery (in degrees Celsius)

Question 5

Which statistical analysis type is used to summarize and describe the main features of a dataset?

Accepted Answer

Descriptive statistics

Question 6

A study aims to estimate the proportion of adults who smoke in a city by randomly sampling 500 residents. Which statistical analysis is most appropriate?

Accepted Answer

Inferential statistics

Question 7

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

Accepted Answer

Data collection method

Question 8

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

Accepted Answer

Quantitative variable

Question 9

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

Accepted Answer

Type of surgery performed

Question 10

Which formula would you use to calculate the mean of a dataset with $$n$$ values $$x_1$$, $$x_2$$, ..., x_n$$?

Accepted Answer

$$\frac{\sum_{i=1}^{n} x_i}{n}$$

Question 11

A study collects data on the ethnicity of patients admitted to a hospital. What is the best level of measurement for this variable?

Accepted Answer

Nominal

Question 12

Which of the following is a key difference between descriptive and inferential statistics?

Accepted Answer

Inferential statistics use sample data to draw conclusions about populations

Question 13

A researcher wants to know if there is a difference in recovery time between two groups of patients after surgery. Which statistical analysis is most appropriate?

Accepted Answer

Inferential statistics

Question 14

Which of the following is an example of an ordinal variable?

Accepted Answer

Pain severity rated as 'none', 'mild', 'moderate', 'severe'

Question 15

If a variable can be counted or measured numerically, it is classified as:

Accepted Answer

Quantitative

Question 16

Which of the following best describes the role of statistical analysis in research?

Accepted Answer

It helps to organize, summarize, and draw conclusions from data

Question 17

A study measures the heart rate of patients before and after exercise. Which type of variable is heart rate?

Accepted Answer

Quantitative

Question 18

Which of the following is NOT a recommended strategy for success in this statistics course?

Accepted Answer

Skip reading and rely only on lectures

Question 19

A researcher wants to study the relationship between hours of sleep and exam scores among university students. Which variable is the independent variable?

Accepted Answer

Hours of sleep

Question 20

Which of the following best explains why variable measurement is important in research?

Accepted Answer

It determines which statistical tests can be used to analyze the data

Applied Statistics for the Health Sciences: Introduction and Foundations

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드