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An Overview of Statistics: Definitions and Branches

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An Overview of Statistics: Definitions and Branches

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Questions and Answers

What is the science of collecting, organizing, analyzing, and interpreting data in order to make decisions?

Descriptive statistics (correct)

Inferential statistics

Statistical Inference

Probability theory

What is a subset of the population?

Parameter

Data

Sample (correct)

Statistic

Which branch of statistics quantifies how likely events are to occur?

Data classification

Inferential statistics

Probability theory (correct)

Descriptive statistics

What type of data cannot be measured by a numerical scale?

Qualitative data Signup and view all the answers

Which term describes a description of a sample characteristic?

Statistic Signup and view all the answers

Which branch of statistics involves using a sample to draw conclusions about a population?

Inferential statistics Signup and view all the answers

What type of data involves numerical measurements that can be ordered and meaningful differences can be calculated?

Interval data Signup and view all the answers

Which type of data has an inherent zero where a ratio of two data values can be calculated?

Ratio data Signup and view all the answers

In the context of data measurement scales, which scale is the crudest and only allows for ranking data?

Ordinal scale Signup and view all the answers

Why can't we say that 50°F is twice as hot as 25°F when comparing temperature scales?

Because the corresponding temperatures on the Celsius scale do not show a 2:1 ratio Signup and view all the answers

What is the purpose of experimental studies in statistics?

To impose treatments and observe responses for data collection Signup and view all the answers

What is a key guideline in designing a statistical study?

Ensuring the sample is representative of the population of interest Signup and view all the answers