Introduction to Statistics and Sampling

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Course Outline

  1. Statistical Investigation Cycle
  2. Individuals Populations and Samples
  3. Variables and Data Types
  4. Parameters and Sample Statistics
  5. Levels of Measurement
  6. Descriptive and Inferential Statistics
  7. Simple Random Sampling
  8. Sampling Designs and Simulations

1. Statistical Investigation Cycle

Key Concepts & Definitions

  • Statistics : The study of how to collect, organize, analyze, and interpret information from data.

★ Must-know

  • A statistical investigation commonly follows the cycle of posing a question, collecting data, analyzing the data, and interpreting the results.

Further detail

  • A statistical procedure cannot be more accurate than the data or facts on which it is based.

Memory Hook

Pose → collect → analyze → interpret

2. Individuals Populations and Samples

Key Concepts & Definitions

  • Individual : A person or object included in a statistical study.
  • Population : Consists of every individual of interest in a statistical study.
  • Sample : Consists of only some of the individuals of interest in a statistical study.

Essential Points

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Anteprima del quiz

1. Which sequence best represents the usual cycle of a statistical investigation?

2. A researcher uses an advanced statistical method on data containing many inaccurate measurements. What is the most reasonable conclusion?

3. In a study of all employees at a company, what does one particular employee represent?

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Anteprima delle flashcard

What is Statistics?

The study of how to collect, organize, analyze, and interpret data.

What is the first step in a statistical investigation cycle?

Posing a question.

What step follows collecting data in a statistical investigation?

Analyzing the data.

What is the final step in a statistical investigation cycle?

Interpreting the results.

What limits the accuracy of a statistical procedure?

The accuracy of the data or facts it is based on.

What is an individual in a statistical study?

A person or object included in the study.

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