Samples Population Experiments Random Selection

Interviewing all members of a given population is called:

• a sample

• a census

• a Gallup poll

• a Nielsen audit

Which ONE of these sampling methods is a probability method?

• Simple random

• Convenience

• Quota

• Judgement

Marianne wanted to know students' opinion on the new schedule at school. So she randomly selected 2 students from each class during second period. 
This is a form of:

• Convenience Sampling
• Random Sampling
• Stratified Sampling
• Systematic Sampling

Snowball sampling can help the researcher to:

• Access deviant or hidden populations

• Theorise inductively in a qualitative study

• Overcome the problem of not having an accessible sampling frame

• All of these

The term used to define the smallest element in sample selection is:

• sampling unit

• statistical unit

• sample frame

• sample interval

Which of the following is a probability-based sample selection method?

• snowball sampling

• convenience sampling

• multistage stratified

• over sampling

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Non-Probability Sample

• Population

• Random Sample

• Biased Sample

Out of a group of 30 volunteers, 11 people are chosen to participate in a survey about the number of phone calls they make each week. What is the sample in this situation?

• The 11 people selected to participate

• The 19 people not selected to participate

• The 30 volunteers

• The people conducting the survey

When one examines the entire population instead of a subgroup of the population, this is called a ____________.

• Sampling

• Census

• Bias

• Random

What type of sampling is this? A journalist asks his family how they feel about water pollution.

• Random sample

• Convenience sample

• Stratified Random sample

• Census