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Course: Statistics and probability > Unit 6
Lesson 3: Sampling methodsSamples and surveys
When we collect data it's important to know what type of data we're collecting and how to collect it properly.
Problem 1: Qualitative and quantitative data
A survey was given that included data on each student's field of interest, age in years, number of languages spoken, and handedness.
David | Becca | Paige | ... | |
---|---|---|---|---|
Field of interest | computer science | journalism | chemistry | ... |
Age (years) | ... | |||
Languages spoken | ... | |||
Handed | right | left | right | ... |
Problem 2: Representative samples
Problem 3: Sampling methods
Willy wants to find what percent of students at his school drink the milk after they finish their cereal. He is considering the following sampling methods:
Problem 4: Biased wording in survey questions
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