WorksheetsBias and Valid Statements
Total questions: 25
Worksheet time: 24mins
Name
Class
Date
1.
Carlos wants to know the favorite sport of people at his school so he asks his baseball team.
a)
Biased
b)
Unbiased
2.
A homeowner divides their backyard into 5 sections, and randomly removes soil from sections.
a)
Biased
b)
Unbiased
3.
A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.
a)
Biased
b)
Unbiased
4.
A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.
a)
Biased
b)
Unbiased
5.
The first 100 people at the park Thursday were asked if dogs should be off leashes in the park.
a)
Biased
b)
Unbiased
6.
To see who has a computer at home the front office chooses 10 students randomly per grade to ask
a)
Biased
b)
Unbiased
7.
A public library asked every 10th person who entered to name the type of book they were getting
a)
Biased
b)
Unbiased
8.
The owners of a music store asked 10 people who wanted help which new CD they liked best.
a)
Biased
b)
Unbiased
9.
A radio hosts wants to know where his listeners go for vacation. He takes 10 phone calls
a)
Biased
b)
Unbiased
10.
A senator wants to how she is doing. She sends a survey to 1000 registered voters in her party
a)
Biased
b)
Unbiased
11.
Should more money be put into athletic programs or music programs at school? Ask: students in the band program.
a)
Biased
b)
Unbiased
12.
Ask: Are you willing to deal with noise, heavy increases in traffic where you live just so another unnecessary mall can be built?
a)
Biased
b)
Unbiased
13.
The manager of an apartment building asked people from the lower floor of building B if they think noise is a problem.
a)
Biased
b)
Unbiased
14.
The lifeguard of a water park wants to determine which water rides are enjoyed the most so he asks every tenth person who leaves the park to list his or her three favorite rides.
a)
Biased
b)
Unbiased
15.
What is your favorite soft drink? Survey: picking names out of a telephone book.
a)
Biased
b)
Unbiased
16.
A nurse wants to know the average height of all 8th graders that attend the middle school where she works so she measures the height of all the basketball players.
a)
Biased
b)
Unbiased
17.
What is your favorite sport? Ask: people attending a soccer game
a)
Biased
b)
Unbiased
18.
Are you willing to pay higher taxes so that the city can build a new stadium?
a)
Biased
b)
Unbiased
19.
Would you prefer to take a long, difficult essay test or a quick, simple multiple choice test?
a)
Biased
b)
Unbiased
20.
What is your favorite vacation destination? Ask: Every student in class.
a)
Biased
b)
Unbiased
21.
Valid or invalid?: Mr. Bowker wants to know how many students like sports so he randomly surveys 20 football players and 10 volleyball players. Of the 30 students surveyed, 100% like sports.
a)
Valid
b)
Invalid
22.
Valid or invalid?: AJ asks her friends, "Hey, how many of you want to go eat at Antonio's? I'm buying!" 97% of her friends said yes. She concludes that most of her friends like pizza.
a)
Valid
b)
Invalid
23.
Valid or invalid?: Alyssa asks every Avalon High School student if they like the mascot "Lancers." 73% said yes, 10% said they don't care, and 17% said no.
a)
Valid
b)
Invalid
24.
Valid or invalid?: Jesus wants to prove to Mr. Bowker that most people dislike math. He asks every third person who exits Vons whether or not they like math. 29% said they LOVE math.
a)
Valid
b)
Invalid
25.
Valid or invalid?: Paul and Jimmy ask every softball, football and soccer player if they would like astroturf on Joe Machado field. 100% said yes. They conclude that everyone loves astroturf.
a)
Valid
b)
Invalid
100 %
