standard_description: Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. For example, if a person walks 1/2 mile in each 1/4 hour, compute the unit rate as the complex fraction 1/2/1/4 miles per hour, equivalently 2 miles per hour.
problem_activity: Three data sets are shown below.
[IMG]
a.   Estimate each population mean based on the data in the samples.
b.   Which estimate do you think is most accurate? Explain your reasoning.


aligns: no