Statistics Chapter Quiz

What is a population in statistical terms?

• A subset of the sample

• The whole set of items that are of interest

• A random selection of items

• A single item from the set

What is a sample in statistical terms?

• The entire population

• A single item from the population

• Some subset of the population intended to represent the population

• A random selection of unrelated items

What is a sampling unit?

• The entire population

• Each individual thing in the population that can be sampled

• A random selection of items

• A group of unrelated items

What is a sampling frame?

• A random selection of items

• A list formed by naming or numbering sampling units

• The entire population

• A single item from the population

What is a census in data collection?

• Data collected from a sample

• Data collected from a subgroup

• Data collected from the entire population

• Data collected from a random selection

Which of the following is an advantage of using a sample instead of a census?

• More accurate

• Cheaper

• Time consuming

• Requires more data

What is a disadvantage of using a census?

• Less data to process

• Cannot be used when testing involves destruction

• Quicker

• May not be accurate

Why might data from a sample not be accurate?

• It is time consuming

• It involves the entire population

• It may not represent small sub-groups

• It is expensive

What is the main goal of random sampling?

• To select the largest sample possible

• To ensure each sampling unit has an equal chance of being chosen

• To choose only the most important units

• To avoid using a sampling frame

Which method is used in simple random sampling to select items?

• Choosing every third item

• Using a random number generator or lottery sampling

• Selecting items based on their importance

• Picking items from the top of the list