PRE-FINAL EXAMINATION IN STATISTICS & PROBABILITY

What do you call the set of all data that researchers want to investigate?

• data

• population

• random

• sample

Which of the following can be considered as the best sample?

• conveniently chosen

• purposefully selected

• selected at random

• self – selected

From the given populations, which of the following sample is most likely to be representatives of the population from which it is drawn?

• population: SAP beneficiaries sample: car owners

• population: lawmakers sample: students

• population: online shoppers sample: cellphone users

• population: graduating students sample: grade 8 students

In random sampling, the sample should be_______ the population.

• as large as

• different from

• not taken from

• representative of

Which of the following is NOT a type of random sampling?

• cluster

• purposive

• simple

• systematic

Which of the following is random sampling?

• convenience

• non-probability

• purposive

• stratified

As a researcher, you ask the people of your barangay on how they spent their money during the community quarantine. You decided to group them according to their socio-economic status and then proportionately and randomly selecting samples from these groups. Which type of sampling are you using?

• convenience

• purposive

• stratified

• systematic

As a researcher, you want to know the plans of graduating senior high school students. You ask all by-passers to participate in your research. Which type of sampling are you using?

• convenience

• purposive

• stratified

• systematic

You wish to examine the effects of community quarantine on your fellow students. You decided to borrow a list from the guidance office and select every 10th student on it. What sampling technique are you using?

• convenience

• purposive

• stratified

• systematic

You want to know the effects of the COVID-19 to the Filipino people and you will ask the medical frontliners. Which type of sampling will you use?

• convenience

• purposive

• stratified

• systematic