What Makes a Good Sample? - 7th data & statistics
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Last updated over 2 years ago
10 questions
1
What do you notice? What do you wonder?
What do you notice?
What do you wonder?
1
If the goal is to have the sample represent the population, which of the samples would work best?
If the goal is to have the sample represent the population, which of the samples would work best?
1
If the goal is to have the sample represent the population, which of the samples wouldn't work very well?
If the goal is to have the sample represent the population, which of the samples wouldn't work very well?
1
What are some aspects that makes for a good sample?
What are some aspects that makes for a good sample?
1
What are some aspects that makes for a BAD sample?
What are some aspects that makes for a BAD sample?
1
If you were to find a measure of center to represent a typical value for the population above, would you use mean or median? Explain
If you were to find a measure of center to represent a typical value for the population above, would you use mean or median? Explain
1
When doing a statistical study, it is important to keep the goal of the study in mind.
Representative samples give us the best information about the distribution of the population as a whole, but sometimes a representative sample won't work for the goal of a study!
For example, suppose you want to study how discrimination affects people in your town. Surveying a representative sample of people in your town would give information about how the population generally feels, but might miss some smaller groups.
Describe a way you might choose a sample of people to address this question.
When doing a statistical study, it is important to keep the goal of the study in mind.
Representative samples give us the best information about the distribution of the population as a whole, but sometimes a representative sample won't work for the goal of a study!
For example, suppose you want to study how discrimination affects people in your town. Surveying a representative sample of people in your town would give information about how the population generally feels, but might miss some smaller groups.
Describe a way you might choose a sample of people to address this question.
1
What does it mean for a sample to be representative of the population?
What does it mean for a sample to be representative of the population?
1
Why might it be important to get a representative sample rather than a more convenient sample?
Why might it be important to get a representative sample rather than a more convenient sample?
1
Usually, a sample is used because we can’t get data for the entire population.
How do we know if the sample is representative of the population if we don’t know the population?
Usually, a sample is used because we can’t get data for the entire population.
How do we know if the sample is representative of the population if we don’t know the population?