ILABR+ Volume 1 Chapter 1 (Pretest)

What is a research term referring to any factor, trait or condition that can exist in different amounts or types?

• Sample

• Variable

• Sampling

• Population

What type of variable is usually being tested, changed and manipulated.

• Controlled

• Dependent

• Independent

• None of the above.

What type of variable is usually affected by the change in another variable?

• Controlled

• Dependent

• Independent

• None of the above.

Which of the following best differentiates population from sample?

• A population is just a subset of the sample.

• A population is usually smaller than a sample in terms of size.

• A population is a complete collection while a sample is just a subset of population.

• The results taken from a population is usually less accurate than a sample.

At Passi National High School, the school head wants to know the readiness of the pre-enrolled grade seven learners. However, out of 617 incoming grade seven students, he surveys 70 students only. In this scenario, which is considered to be as the sample?

• 70 selected grade seven students

• 617 incoming grade seven students

• 547 not selected grade seven students

• Not specified in the problem.

Why do researchers engage in sampling?

• It makes research fun and enjoyable.

• It makes the study sophisticated and high quality.

• It is used to lessen the cost of the data gathering.

• It is used to make sure that the sample is a representative of the population.

Which of the following BEST describes probability sampling?

• It is a type of sampling that is based purely on convenience.

• It is a type of sampling that demonstrates random selection of samples.

• It is a type of sampling that has not pre-determined set of criteria.

• It is a type of sampling that uses referral method to identify other members of the sample.

Which of the following BEST describes non-probability sampling?

• It is a sampling method typically follows random selected to avoid biases.

• It is a sampling method where a sample is taken from a larger population.

• It is a sampling method that where every member of the population has a chance of being selected.

• It is a sampling method where participants are not randomly chosen and is chosen based on convenience.

Which type of probability sampling involves dividing the population into groups, selecting entire groups at random, and including every member of those groups in the sample?

• Cluster

• Systematic

• Simple Random

• Stratified Random

Which type of non-probability sampling is shown by the image?

• Quota

• Snowball

• Purposive

• Convenience