Sampling and Data Collection

What is a nominal scale?

• A scale that uses numbers to label or name variables without any mathematical value.

• A scale that ranks variables in order of magnitude.

• A scale that measures the distance between variables.

• A scale that provides a true zero point for measurement.

What is accidental sampling?

• A method where elements are included in the sample because they were at the right place at the right time.

• A technique where samples are chosen based on specific criteria.

• A process of selecting samples randomly from a larger population.

• A method that involves selecting every nth individual from a list.

What is an ordinal scale?

• A scale that ranks objects or variables but does not indicate the magnitude of differences between them.

• A scale that measures the exact differences between objects or variables.

• A scale that categorizes objects or variables without any order.

• A scale that provides numerical values to objects or variables.

What is simple random sampling?

• A method where each element has the same chance of being selected.

• A sampling technique that only includes the first few elements of a population.

• A method that selects elements based on specific characteristics.

• A technique that ensures every group in a population is represented.

What are the types of survey designs?

• Cross-sectional, before-and-after (pre-test post-test), longitudinal.

• Qualitative, quantitative, mixed-methods.

• Descriptive, exploratory, explanatory.

• Randomized control, cohort, case-control.

What is the difference between experimental and control groups?

• The experimental group is exposed to the intervention, while the control group is not.

• The control group receives the intervention, while the experimental group does not.

• Both groups receive the same intervention but are measured differently.

• The experimental group is larger than the control group.

What is unobtrusive research?

• Research where the researcher directly interacts with participants to gather data.

• Research that involves manipulating variables to observe effects.

• Research where the researcher does not directly interact with participants, minimizing influence on responses.

• Research conducted in a controlled environment with strict guidelines.

What is sampling error?

• An indication of how confident we are that a percentage will generate the same answer as the entire population.

• The difference between the sample mean and the population mean.

• The error caused by observing a sample instead of the whole population.

• A measure of the variability of a sample statistic.

What is volunteer sampling?

• A method where the sample is made up of individuals who volunteer to participate in the research.

• A technique where participants are randomly selected from a larger population.

• A sampling method that involves selecting individuals based on specific characteristics.

• A process where researchers choose participants based on their availability.

What are personal interviews?

• Interviews that can be structured or unstructured, allowing for in-depth responses.

• Interviews that are always conducted in a formal setting.

• Interviews that only use closed-ended questions.

• Interviews that are conducted over the phone.