Concept explainers
Determine the population and the sample in the following surveys. Is the sample representative?
a. You ask 50 students who have segregated their recyclables at lunch time whether or not they recycle at home.
b. To determine the favourite drink (coffee or tea) among the staff at your school, you ask each teacher, principal, and administrative assistant to write their choice on a card provided and then tally the responses.
c. To determine how many children have seen the new action hero movie over the weekend, you interview 50 children in the school library on the following Monday afternoon.
d. To determine the most popular color of cars in your city, you sit at the only thoroughfare connecting the largest residential district with downtown and tally the colors of passing cars during peak hours on several weekdays.
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Problem Solving Approach to Mathematics for Elementary School Teachers
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