Introductory Psychology Course Interactive Demonstrations

https://www.danblu.com/teaching/demos

Demo Topic: Statistics 🡪 Random sampling

Learning Outcome:

Understand and apply random sampling in research

Demo

This Photo by Unknown Author is licensed under CC BY-NC

Questions to Consider…

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• How many Starbursts do we need to sample to be confident in knowing the colors in the population?

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How many Starbursts do we need to sample to be confident in knowing the colors in the population?

In-class polling question:

Use your polling software of choice. For Poll Everywhere slides, please see https://www.danblu.com/teaching/demos.

How confident are we?

Calibrating our cheering scale.

0%:

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100%:

% Red Starbursts

Starbursts sampled

Confidence in estimate

% Orange Starbursts

Starbursts sampled

Confidence in estimate

Which is the most prevalent color?

Starbursts sampled

Confidence in estimate

Questions to Consider…

• How many Starbursts do we need to sample to be confident in knowing the colors in the population?

​

​

How many Starbursts do we need to sample to be confident in knowing the colors in the population?

In-class polling question:

Use your polling software of choice. For Poll Everywhere slides, please see https://www.danblu.com/teaching/demos.

Questions to Consider…

• How many Starbursts do we need to sample to be confident in knowing the colors in the population?

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• Why does sampling more Starbursts help us to make more accurate assumptions about the entire population of Starbursts in a particular bag?

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• What can we ‘infer’ from our study sample results about the larger population of people we didn’t test?

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Inferential Statistics helps answer these