Professor Yao wants to know whether students at EKU can score higher by attending class each time. He understands that other factors may also be equally important for students to get a higher grade for his class such as spending more time on the class, group-working with other students. He is also curious about whether different student groups will be different such as categorized by gender, age group, full-time job status etc.

0. What is your initial judgment?

1. What is the population? Is your population effectively infinite?

2. If census appropriate? Why?

3. What sampling methods will you use? Why?

4. How you collect the data set? (what kind of survey you will use? Why?)

5. What kind of information you plan to get? (what kind of questions you want to ask? What types of data for those answers?)

6. What are possible sources of error? Explain in detail.

7. Will you collect time series data or cross-sectional data? Why?