Statistics Definitions [1/10]

What is a population in statistical terms?

• A subset of individuals from a larger group

• The entire group of individuals or instances about whom we hope to learn

• A numerical summary of a sample

• A method of collecting data

Which of the following best defines a sample?

• A numerical summary of a population

• A subset of the population used to represent the entire group

• The entire group of individuals or instances

• A method of data analysis

What is a parameter in the context of statistics?

• A characteristic or measure obtained by using the data values from a sample

• A characteristic or measure obtained by using the data values from a population

• A method of selecting a sample

• A type of data collection

Identify the statistic in the following scenario: A researcher calculates the average height of a sample of 50 students.

• The average height of the entire student body

• The average height of the sample of 50 students

• The total number of students in the school

• The method used to select the sample

Which of the following statements correctly differentiates between a sample and a population?

• A sample includes all individuals, while a population includes only a subset

• A sample is a subset of a population, while a population includes all individuals

• A sample and a population are always the same size

• A sample is always larger than a population

What is the main purpose of using a sample in statistics?

• To avoid collecting data

• To make inferences about a population

• To replace the need for a population

• To ensure data is biased

Which of the following is a common sampling method?

• Random sampling

• Data mining

• Hypothesis testing

• Regression analysis

In which sampling method does every member of the population have an equal chance of being selected?

• Stratified sampling

• Systematic sampling

• Random sampling

• Convenience sampling

What is stratified sampling?

• A method where the population is divided into subgroups and random samples are taken from each subgroup

• A method where every nth individual is selected from a list

• A method where samples are taken based on ease of access

• A method where the entire population is surveyed

Which sampling method involves selecting every nth individual from a list?

• Stratified sampling

• Systematic sampling

• Random sampling

• Cluster sampling