TEST 2 (PART 1)

Which of the following is an example of a population?

• Students in a particular class

• All students enrolled in a university

• All students in a particular grade level

• Students selected randomly for a survey

What is the purpose of sampling in statistics?

• To ensure that every individual or item in a population is included in the study

• To reduce the time and cost required to collect data

• To eliminate the need for statistical analysis

• To increase the accuracy of the study by including all possible data points

In stratified sampling, how is the population divided before selecting the sample?

• The population is divided into strata or groups based on certain characteristics.

• The population is divided randomly into equal parts

• The population is divided based on geographical location.

• The population is divided based on alphabetical order.

Which sampling method is often used in opinion polls or surveys to ensure that the sample is representative of the population?

• Convenience sampling

• Quota sampling

• Random sampling

• Snowball sampling

Which of the following is a disadvantage of convenience sampling?

• It may introduce bias into the sample.

• It is time-consuming and expensive.

• It requires a detailed list of the population.

• It ensures a representative sample of the population.