Collection of Data

What is data?

• A collection of numbers and graphs

• Information obtained from various sources

• Only numerical figures used in research

• A list of names and addresses

Which of the following is an example of primary data?

• A government report on national employment rates

• A researcher conducting a personal interview

• A student using an old magazine article for a project

• A company using existing financial records for analysis

Which of the following is NOT an example of secondary data?

• A student conducting an original survey

• Using newspaper articles for an oral report

• Referring to previous census data for analysis

• Collecting data from published research papers

Simple random sampling ensures that:

• The researcher selects participants based on convenience

• Every individual in the population has an equal chance of being chosen

• The population is divided into categories before selection

• Participants are picked in a predetermined order

What is an example of convenience sampling?

• A teacher randomly selecting names from a hat

• A researcher selecting participants based on who is easiest to reach

• A company randomly selecting employees for a survey

• A school selecting students from different grade levels proportionally

In stratified sampling, the population is divided into:

• Equal-sized groups

• Categories with similar characteristics

• Randomly chosen individuals

• Clusters based on geographic location

Cluster sampling involves:

• Selecting individuals at random from the entire population

• Picking every nth individual from a list

• Randomly selecting groups and taking samples from those groups

• Choosing participants based on convenience

What is a key characteristic of systematic sampling?

• Every participant is chosen randomly from the whole population

• The researcher picks every nth individual in a list

• Participants are divided into categories before selection

• The researcher selects people who are easiest to access

A researcher selects participants by choosing every 5th student on a school attendance list. What sampling method is used?

• Cluster Sampling

• Stratified Sampling

• Systematic Sampling

• Simple Random Sampling

A teacher divides students into male and female groups, then randomly picks 3 students from each group. This is an example of:

• Stratified Sampling

• Cluster Sampling

• Simple Random Sampling

• Convenience Sampling