Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations.
In plain words: Students use measures of center and variability from random samples to draw informal conclusions about how two populations compare.
Quick picks
- Common mistake
- Treating a 1-book gap between sample means as proof that the population means differ: random samples can differ just by chance.
- Leads to
- HSS.ID.A.2Comparing data sets
Example Problems
You have found the following ages (in years) of all 4 rhinos at your local zoo:
What is the standard deviation of the age of the rhinos at your zoo? Round your answers to the nearest tenth.
What is the standard deviation of the age of the rhinos at your zoo? Round your answers to the nearest tenth.
You have found the following ages (in years) of all 8 meerkats at your local zoo:
What is the standard deviation of the age of the meerkats at your zoo? Round your answers to the nearest tenth.
What is the standard deviation of the age of the meerkats at your zoo? Round your answers to the nearest tenth.
You have found the following ages (in years) of all 6 lions at your local zoo:
Use the average age of the lions at your zoo to find the variance.
Round your answers to the nearest tenth, if necessary.
Use the average age of the lions at your zoo to find the variance.
Round your answers to the nearest tenth, if necessary.
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