15 questions
To evaluate the defect rate of its memory chips, an integrated circuit manufacturer tests every 100th chip off the production line.
Simple Random Sample
Systematic Random Sample
Convenience Sample
Voluntary Response Sample
To evaluate the defect rate of its memory chips, an integrated circuit manufacturer tests every 100th chip off the production line.
Biased Sample
Unbiased Sample
Students who wish to represent the school at a school board meeting are asked to stop by the office after lunch
Simple Random Sample
Systematic Sample
Convenience Sample
Voluntary Response Sample
Students who wish to represent the school at a school board meeting are asked to stop by the office after lunch
Biased Sample
Unbiased Sample
A real estate agent surveys people about their housing preferences at an open house for a luxury townhouse.
Simple Random Sample
Systematic Random Sample
Convenience Sample
Voluntary Sample
A real estate agent surveys people about their housing preferences at an open house for a luxury townhouse.
Biased Sample
Unbiased Sample
To determine the most popular children’s programs, a television station asks parents to call in and complete a phone survey.
Simple Random Sample
Systematic Random Sample
Convenience Sample
Voluntary Response Sample
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.
Simple Random Sample
Systematic Random Sample
Convenience Sample
Voluntary Response 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.
Simple Random Sample
Systematic Random Sample
Convenience Sample
Voluntary Response 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.
**Be sure to explain why for your quiz**
Valid
Invalid
To evaluate customer satisfaction, a grocery store gives double coupons to anyone who completes a survey as they enter the store. The store manager determines that customers are very satisfied with their shopping experience in his store.
**Be sure to explain why for your quiz**
Valid
Invalid
To evaluate the integrity of underground water lines, the department of public works randomly selects 20 sites in the city to unearth and observe the water lines. At 5 of the sites, the water lines needed repair. The department of public works concludes that about one-fourth of underground water lines throughout the city need repair.
**Be sure to explain why for your quiz**
Valid
Invalid