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Boundless Statistics
Sampling
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Section 3

Sample Surveys

Book Version 1
By Boundless
Boundless Statistics
Statistics
by Boundless
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7 concepts
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The Literary Digest Poll

Incorrect polling techniques used during the 1936 presidential election led to the demise of the popular magazine, The Literary Digest.

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The Year the Polls Elected Dewey

In the 1948 presidential election, the use of quota sampling led the polls to inaccurately predict that Dewey would defeat Truman.

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Using Chance in Survey Work

When conducting a survey, a sample can be chosen by chance or by more methodical methods.

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How Well Do Probability Methods Work?

Even when using probability sampling methods, bias can still occur.

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The Gallup Poll

The Gallup Poll is a public opinion poll that conducts surveys in 140 countries around the world.

Telephone Surveys

Telephone surveys can reach a wide range of people very quickly and very inexpensively.

Chance Error and Bias

Chance error and bias are two different forms of error associated with sampling.

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