Sampling foundations and simple random sampling

STA 121. Practice questions, not past papers.

Lessons

• Define a sampling investigation
• Implement simple random sampling

Practice questions

1. A sampling frame is what?

   Statistics study edition practice item Q228; Source: T95-98

2. Which property defines an SRS of fixed size without replacement?

   Statistics study edition practice item Q229; Source: T95-98

3. When using random labels without replacement, what should happen to duplicates?

   Statistics study edition practice item Q230; Source: T95-98

4. Which statement about large samples is correct?

   Statistics study edition practice item Q231; Source: T95-98

5. How many distinct unordered SRS samples of size 3 can be selected without replacement from 10 units?

   Statistics study edition practice item Q232; Source: T96-98

6. There are 20 labelled units and an SRS of size 5 without replacement. What is one unit's inclusion probability? Give the value to 4 decimal places.

   Statistics study edition practice item Q233; Source: T96-98

7. The operational list for selecting a sample is a sampling _____.

   Statistics study edition practice item F076; Source: T95-98

8. A fixed-size SRS gives every possible sample an equal _____.

   Statistics study edition practice item F077; Source: T95-98

Topic gap report