Statistical Questions

What is an experimental research method?

• A method where researchers observe subjects without manipulation.

• A method where researchers manipulate one variable to determine its effect on another variable.

• A method that relies solely on theoretical models without practical application.

• A method that involves collecting data through surveys and questionnaires.

What is a population in statistics?

• A population is a sample of individuals selected from a larger group.

• A population is the entire group of individuals or instances about whom we hope to learn.

• A population is a statistical measure of a sample's characteristics.

• A population is a collection of data points that are analyzed.

What is a statistical question?

• A question that can be answered with a simple yes or no.

• A question that anticipates variability in the data and can be answered by collecting data that varies.

• A question that requires a definitive answer without any data.

• A question that is based on personal opinion rather than data.

Why is it important to understand variability in data?

• It helps in making accurate predictions and informed decisions based on data.

• It allows for the collection of more data points.

• It simplifies the data analysis process.

• It eliminates the need for statistical methods.

Is 'How many apps does each of your classmates have on their phones?' a statistical question?

• No, it only asks for a single person's data.

• Yes, because it involves collecting data from multiple individuals.

• No, it is a yes or no question.

• Yes, but only if the classmates are surveyed individually.

Is 'How many siblings do each of your classmates have?' a statistical question?

• Yes, it requires data collection from multiple individuals.

• No, it only requires a single person's response.

• Yes, but only if the question is asked in a survey.

• No, it is a personal question without statistical relevance.

What is the role of randomness in sampling?

• Randomness helps ensure that the sample is representative of the population, reducing bias.

• Randomness makes the sampling process faster and easier.

• Randomness eliminates the need for a sample size.

• Randomness guarantees that every individual in the population will be included in the sample.

What is an observational study?

• A research method where the researcher manipulates variables to determine cause and effect.

• A research method that involves collecting data through surveys and questionnaires.

• A research method where the researcher observes and records behavior without manipulating any variables.

• A research method that relies solely on theoretical analysis without practical observation.

What is the significance of a hypothesis in experimental research?

• A hypothesis is a definitive conclusion drawn from the data collected.

• A hypothesis is a testable statement predicting the relationship between variables, guiding the research process.

• A hypothesis is an untestable assumption made before the research begins.

• A hypothesis is a summary of the research findings after the experiment.

Is 'How many students in your class ate breakfast this morning?' a statistical question?

• Yes, it is a statistical question because it involves data collection.

• No, it seeks a specific count from a single instance.

• Yes, it can be analyzed statistically over time.

• No, it is not a question that can be answered with data.