BIASED OR UNBIASED SAMPLE

To get valid results, a sample must be...

• biased

• unbiased

You want to know your town’s favorite fast-food restaurant. You randomly ask 30 people their preference as they leave a McDonald’s restaurant.

• biased

• unbiased

14. Biased questions lead people to answer a particular way.

• A. True
• B. False

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

15. Is the following question biased? 
Are stoplights needed at the intersection of Main and Perry Streets?

• A. Not biased/ Unbiased
• B. Biased

The TV station wants to get the opinion of viewers on the look of a new game-show set.  The station's staff calls random people in the phone book.  Is this biased or unbiased?

• Biased
• Unbiased

An automobile dealer surveys its customers to determine their level of satisfaction with the services provided at the dealership.  The sample is chosen from a list of e-mail addresses.  Is this biased or unbiased?

• Biased
• Unbiased

A sample is considered ________ if it does not fairly represent the population.

• biased

• unbiased

1. A sample is considered ________ if each member of the population has an equal chance of being included.

• biased

• unbiased

1. Surveying only people at a sports event about their favorite sport is an example of a ________ sample.

• biased

• unbiased

1. Using a random number generator to select participants for a survey ensures an ________ sample.

• biased

• unbiased