STATISTIC
handout02

# handout02 - HANDOUT#2 TYPES OF STATISTICAL STUDIES TOPICS 1...

• Notes
• 31

This preview shows pages 1–4. Sign up to view the full content.

HANDOUT #2 - TYPES OF STATISTICAL STUDIES TOPICS 1. Observational vs Experimental Studies 2. Retrospective vs Prospective Studies 3. Sampling Principles: (a) Probability Sampling: SRS, Systematic, Stratified, Clus- ter (b) Estimation of population parameters 4. Experimental Design Principles 5. Common Problems in Designed Experiments 6. Selecting an Appropriate Design 1

This preview has intentionally blurred sections. Sign up to view the full version.

Cross-sectional study: Involves data collected at a specific point in time. This type of study is often used to assess the prevalence of acute or chronic conditions, or to answer questions about the causes of disease or the results of medical intervention. Example: Study the effect of oral contraceptives (OC) on heart disease in women aged 40-44 years. Randomly select 5000 users of OC and 10000 nonusers and record the occurrences or nonoccurrence of myocardial infraction for the 15000 women. Sample Survey Example The Bureau of Labor Statistics determines the unemployment rate. The Current Population Survey (CPS), or ”Household Survey”, conducts a survey based on a sample of 60,000 households.

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.
• Fall '13
• experimental units

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern