An education survey published a list of the average student-to-teacher ratio in each of the 5050 cities located in a country. If we add the 5050 city averages and then divide by 5050, we obtain a value of 16.216.2 students per teacher. Is this value considered the true average for the student-to-teacher ratio for all the classrooms located in the country? Why or why not?

The data includes only 5050 cities and excludes smaller towns

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Problem 2Multiple Choice

An education survey published a list of the average student-to-teacher ratio in each of the $50$ cities located in a country. If we add the $50$ city averages and then divide by $50$ , we obtain a value of $16.2$ students per teacher. Is this value considered the true average for the student-to-teacher ratio for all the classrooms located in the country? Why or why not?

The average should be calculated by using the median instead of the mean

Student-to-teacher ratios cannot be averaged because they vary too much

The national average must be calculated as a weighted mean, not a simple average

The data includes only $50$ cities and excludes smaller towns

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