Data Collection and Sampling Techniques

A ___ is a large group that includes everything being studied.

• Sample

• Stratified Sampling Method

• Population

• Census

A ___ is a small portion of the population used to gather data from.

• Group

• Sample

• Population

• Bias

What is qualitative data (choose 2)

• this data type is numerical in nature. This type of data is collected through questionnaires, one-to-one interview, conducting focus groups and similar methods

• this data type is non-numerical in nature. This type of data is collected through methods of observations, one-to-one interview, conducting focus groups and similar methods

• this data are data about numeric variables (e.g. how many; how much; or how often).

• this data are measures of 'types' and may be represented by a name, symbol, or a number code

Of the following sampling methods, which is a probability method?

• Voluntary Response

• Snowball

• Simple random

• Convenience

An ordinal scale is used to rank order people, objects, or characteristics.

• True

• False

Interview every 10th student who enters the school in the morning. Determine the sampling method used.

• simple random sampling

• cluster sampling

• systematic sampling

• convenience sampling

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class. Determine the sampling method that she used.

• Convenience Sampling

• Systematic Random Sampling

• Simple Random Sampling

• Snowball Sampling

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 teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• Simple Random Sampling

• Stratified Sampling

• Convenience Sampling

• Systematic Sampling

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She picks the student in every 5th seat.

• Simple Random

• Systematic

• Voluntary Response

• Convenience