review observational &experimental survey

What is the difference between qualitative and quantitative data?

• Qualitative data involves numerical measurements, while quantitative data describes characteristics or qualities.

• Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.

• Qualitative data is always more reliable than quantitative data.

• Quantitative data is subjective, while qualitative data is objective.

How do you determine if a study is observational or experimental?

• If the researcher manipulates variables, it is observational; if they only observe without manipulation, it is experimental.

• If the researcher observes without manipulation, it is observational; if they manipulate variables, it is experimental.

• If the study involves a control group, it is experimental; if not, it is observational.

• If the study is conducted in a lab, it is experimental; if in the field, it is observational.

What is a sample in research?

• A sample is a complete representation of the population.

• A sample is a subset of the population selected for observation and analysis.

• A sample is the entire population being studied.

• A sample is a random selection of data points from a dataset.

What is the significance of sample size in research?

• Sample size has no impact on research outcomes.

• Larger samples generally provide more accurate estimates.

• Sample size only affects the cost of the research.

• Smaller samples are always more reliable.

What is an observational study?

• A type of research where the researcher manipulates variables to determine outcomes.

• A type of research where the researcher observes and records behavior or outcomes without manipulating any variables.

• A study that only involves laboratory experiments and controlled environments.

• A research method that relies solely on surveys and questionnaires.

What is random sampling?

• A technique where each member of the population has an equal chance of being selected for the sample.

• A method of selecting samples based on specific characteristics of the population.

• A sampling technique that ensures only the most relevant members are chosen.

• A process that involves selecting samples at regular intervals from a population.

What is the difference between descriptive and inferential statistics?

• Descriptive statistics analyze data from a population, while inferential statistics summarize sample data.

• Descriptive statistics summarize data from a sample, while inferential statistics make predictions or inferences about a population based on sample data.

• Descriptive statistics and inferential statistics are the same and can be used interchangeably.

• Descriptive statistics focus on the past data, while inferential statistics focus on future data.

What is the purpose of a control group in an experiment?

• A control group is used as a baseline to compare the effects of the experimental treatment.

• A control group is used to ensure that the experiment is conducted ethically.

• A control group is used to increase the sample size of the experiment.

• A control group is used to manipulate the variables in the experiment.

What is an experimental study?

• A type of research where the researcher observes subjects without manipulation.

• A type of research where the researcher manipulates one or more variables to determine their effect on a dependent variable.

• A type of research that only involves surveys and questionnaires.

• A type of research that focuses solely on qualitative data.

What is a hypothesis?

• A hypothesis is a testable prediction about the relationship between two or more variables.

• A hypothesis is a definitive conclusion drawn from data.

• A hypothesis is an untestable statement about a phenomenon.

• A hypothesis is a random guess without any basis.