Sampling Techniques in Research

What is the main purpose of sampling participants in a research study?

• To exclude unwanted data points

• To manipulate study results

• To ensure data is collected faster

• To represent the target population

Which sampling technique ensures every individual in a population has an equal chance of being selected?

• Convenience sampling

• Stratified sampling

• Random sampling

• Purposive sampling

What is a key characteristic of quota sampling?

• It uses random selection within strata

• It continues sampling until a specific number is reached

• It targets individuals with specific characteristics

• It involves asking participants to recruit others

Which sampling method is most likely to introduce bias due to social networks?

• Stratified sampling

• Quota sampling

• Snowball sampling

• Systematic sampling

What is the primary concern when using convenience sampling?

• High costs

• Sampling bias

• Time consumption

• Complex data analysis

Why might purposive sampling be chosen in qualitative research?

• To ensure a large sample size

• To include individuals with specific characteristics

• To randomly select participants

• To minimize costs

What is the main difference between stratified sampling and quota sampling?

• Stratified uses nonprobability sampling; quota uses probability sampling

• Stratified sampling is faster

• Quota sampling ensures randomness within strata

• Stratified uses probability sampling; quota uses nonprobability sampling

Which sampling technique involves selecting participants at regular intervals?

• Systematic sampling

• Random sampling

• Convenience sampling

• Snowball sampling

What can introduce selection bias in a study?

• Using random sampling methods

• Selecting participants through advertisements

• Stratifying the sample by age and gender

• Ensuring equal representation of all population groups

What should researchers critically evaluate when reading others' research studies?

• The length of the study

• The sampling techniques and potential biases

• The number of graphs and charts included

• The font size used in the report