Descriptive Statistics and types of Data

What are the methods of primary data collection?

• questionnaires, focus groups, secondary data analysis
• sampling, content analysis, case studies
• surveys, interviews, observations, and experiments
• ethnography, content analysis, secondary data analysis

Which method of sampling randomly selects items/people at equal chance?

• Cluster sampling
• Stratified random sampling
• Simple random sampling
• Systematic random sampling

Which method of primary data collection is expensive but accurate?

• mail surveys
• online surveys
• telephone interviews
• face-to-face interviews

What is the purpose of hypothesis in the context of education science?

• To provide a final conclusion without any research or analysis.
• To propose a tentative explanation or prediction that can be tested and analyzed through research.
• To create a hypothesis that cannot be tested or analyzed through research.
• To confuse students and make the learning process more difficult.

What is the measure of dispersion that represents the difference between the largest and smallest value?

• range
• standard deviation
• variance
• mean

What is the measure of central location that represents the value that occurs with the greatest frequency?

• mode
• range
• median
• mean

What is the measure of central location that represents the middle value of a variable?

• mode
• range
• mean
• median

What is the measure of central location that represents the average value of a variable?

• range
• mean
• mode
• median

What are the stages of data collection?

• Gathering, Sorting, Summarizing, Visualizing
• Planning, Collecting, Analyzing, Interpreting, Reporting
• Designing, Implementing, Evaluating, Presenting
• Planning, Collecting, Cleaning, Analyzing, Interpreting

What measure of shape calculates the difference between the third quartile and the first quartile?

• range
• mean
• median
• interquartile range