Random and Non Random Sampling

Identify the type of sampling used:

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic sample

• simple random sample

• convenience sample

• voluntary response sample

Identify the type of sampling used:

A teacher splits her classes up by period. She then uses a RNG to select 10 students from each period to participate in a survey.

• Stratified Random Sample

• Systematic Random Sample

• Cluster Random Sample

• Biased Sample

An employer wants to know how their 500 employees like working for them. Which is the most representative sample?

• Ask the first 75 people to show up for work

• Randomly select the names of 10 employees

• Poll the Employees of the Month for the past year

• Randomly select the names of 75 employees

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample

• Stratified Random Sample

• Voluntary Response

• Systematic Random Sampling

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

• biased sample

• population

• random sample

• sample

Sample in which each individual or object in the entire population has an equal chance of being selected.

• Simple Event

• Sample

• Random Sample

• Scatter Plot

Every member of the larger group has an equal chance of being chosen.

• secondary sample

• systematic sample

• stratified sample

• random sample

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

• Sample

• Population

• Random Sample

• Quartile

It is the selection of n elements derived from population N which is the subject of the investigation in which each sample point has an equal chance of being selected using proper sampling techniques.

• sampling distribution

• random sampling

• non-random sampling

• probability sampling

A selection of respondents used when the sample is not a proportion of the population and when there is no system in selecting a sample.

• sampling distribution

• random sampling

• non-random sampling

• probability sampling