Probability

Theoretical Probability

The chance of something happening based on math and logic, not experiments.

Experimental Probability

The chance of something happening based on actual experiment results.

Biased Question

A question that influences or pressures someone to answer a certain way.

Valid Questionnaire Tips

Consider bias, use of language, timing, privacy, cultural sensitivity, ethics, and cost & time to create a good, fair questionnaire.

Population

The whole group you're studying or asking questions about.

Census

A survey of the entire population.

Sample

A small group taken from the population to represent the whole.

Valid Conclusion

A decision or result that makes sense based on fair data and no bias.