Statistics Definitions

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

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 distribution of the data?

• skewed right

• skewed left

• symmetric

• stairsteps

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 an example of a parameter?

• The average income of a sample of 100 households

• The average income of all households in a city

• The median income of a sample of 50 households

• The mode of incomes in a sample of 30 households

A branch of science which deals with the collection, organization, presentation, analysis, and interpretation of data

• Geometry

• Statistics

• Biology

• Chemistry

Deals with organizing and summarizing observations so that they are easier to comprehend

• Statistics

• Descriptive Statistics

• Inferential Statistics

• Statistician

Deals with the formulation of inferences about conditions that exist in a population from study of a sample drawn from a population.

• Statistics

• Descriptive statistics

• Inferential statistics

• Statistician