Statistics and Probability Quiz

Which of the following descriptions is/are true? I. A population is a representative portion of the sample. II. A sample is a representative portion of the population.

• I only

• II only

• Both I and II

• Neither I nor II

Suppose that you are investigating the amount of weekly savings of your classmates. Out of your 40 classmates, you just chose 12 of them and asked how much their weekly savings are. The mean weekly savings that you will be able to compute is an example of a ________.

• parameter

• statistic

• population

• sample

Which of the following describes sampling? I. It is the process of taking a sample from a population of subjects or respondents. II. It is used in inferential statistics.

• I only

• II only

• Both I and II

• Neither I nor II

Which of the following describes a parameter? I. It is a measure that describes a population. II. It can be estimated using an appropriate statistic.

• I only

• II only

• Both I and II

• Neither I nor II

Jahnea is conducting a study about junk food intake of children in the barangay where she lives. The samples she took are children who live near her family's house. Which of the following is/are true about Jahnea's samples? I. Jahnea's samples can be used in statistical inference. II. The samples Jahnea took are an example of non-probability samples.

• I only

• II only

• Both I and II

• Neither I nor II

All of the following are characteristics of a probability sample except which one?

• Chance mechanism is used in selecting this type of sample.

• The probability of selection of this type of sample is known.

• Results generated from this type of sample can be generalized to their parent population.

• This type of sample should not be used for statistical inference.

Which sampling method gives every member of the population an equal chance of being chosen?

• Stratified random sampling

• Simple random sampling

• Systematic random sampling

• Cluster sampling

In which sampling method are elements selected based on the kth element?

• Stratified random sampling

• Simple random sampling

• Systematic random sampling

• Cluster sampling

What is the term for a subset of a population used in research?

• Parameter

• Census

• Sample

• Population

In which sampling method is the population divided into subgroups, and random samples are drawn from each?

• Stratified random sampling

• Simple random sampling

• Systematic random sampling

• Cluster sampling