Bio Stat Prelim

What is the primary purpose of data collection?

• To summarize data

• To gather and measure information

• To analyze statistical data

• To interpret outcomes

Which of the following is NOT a method of data collection?

• Questionnaire method

• Interview method

• Data analysis method

• Observation method

Which of the following is a characteristic of a closed-ended question?

• The respondent forms their own answer

• The answer options are exhaustive and mutually exclusive

• The question allows for an infinite number of responses

• The question requires an open response

Which of the following is an example of a dichotomous question?

• What is your age?

• Do you prefer tea or coffee?

• How often do you exercise?

• What is your educational background?

What is the purpose of the observation method in data collection?

• To collect numerical data

• To observe behaviors during the occurrence of a given situation

• To record opinions of respondents

• To analyze secondary data

What is a key feature of a sample size in research?

• It refers to the entire population

• It ensures the research can be generalized

• It determines the methods of data collection

• It is not important in research

In sample size determination, what is the typical margin of error used when not specified?

• 0.01
  

• 0.05

• 0.1

• 0.25

Which type of sampling ensures that the sample represents the entire population?

• Non-random sampling

• Stratified sampling

• Random selection

• Convenience sampling

Which of the following is an example of simple random sampling?

• Selecting names from a hat

• Choosing every 10th student in a list

• Dividing a population by age groups

• Selecting participants based on judgment

What is systematic sampling?

• A method of sampling using random numbers

• A method of selecting every nth item from a list

• A method of sampling based on convenience

• A method where the population is divided into groups