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WorksheetsPopulation Sampling and Biased
Total questions: 15
Worksheet time: 45mins
Wicomico County Public Schools randomly selected 230 teachers to find out which technology resource it's teachers feel is the most effective.
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.
To determine the most popular children’s programs, a television station asks parents to call in and complete a phone survey.
Biased Sample
Unbiased Sample
Airline boarding passes are marked with red stars at random to decide which passengers should have their carry-on luggage inspected.
Biased Sample
Unbiased Sample
To determine how often people eat out, every tenth person entering a Chinese restaurant is surveyed.
Biased Sample
Unbiased Sample
To determine the most common injury cared for in an emergency room, a reporter goes to the same hospital every afternoon for one month during the summer and observes people entering the emergency room. She concludes that second degree sunburn is the most common injury.
Unbiased
Biased
Carlos wants to know the favorite sport of people at his school so he asks his baseball team.
Biased
Unbiased
A public library asked every 10th person who entered to name the type of book they were getting.
Biased
Unbiased
To get valid results, a sample must be...
biased
unbiased
Ariana wants to know the favorite type of music for students in her class. She puts the names of all the students in a hat, draws 8 names, and surveys those students.
biased
random
