Identify: Population
Mrs. Castro, the principal at Brookfield Middle School, asked her teachers to participate in a study on teaching methods.
The teachers.
Harper surveyed the 22 shoppers who spent the most at her boutique last month.
22 shoppers who spent the most last month.
Gabriel surveyed the 72 top-ranking students in the high school.
Biased - all students did not have an equal chance of being chosen.
Amelia studied 7 pieces by each modern artist featured in the museum. Each artist has the same number of works in the museum.
Is this sample of the work of the museum's modern artists likely to be representative?
Each artist was sampled an equal amount and they had same number of works.
What is Mr. Draughon's dog's name?
Daisy
Mia polled the last 16 athletes to finish a bike race.
The athletes in the bike race.
Alvin explored 2 hiking trails in each county in his state. Each county has an equal number of hiking trails.
2 hiking trails in each county.
Jasper surveyed the first 48 people to use a new website.
Biased
Since the first users might not be similar to the other users, it is a biased sample, not a random sample.
Andrew surveyed 2 patients who spent more than two hours at the dentist's office.
Is this sample of the dentist's patients in general likely to be representative?
not representative
All patients do not spend more that 2 hours at the docs.
Name 1 of Coach Spears son's.
Beau
Ken Jr.
Sophie, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they liked most about the store.
The customers that shop at the store.
While designing a new dessert menu, the manager of a restaurant offered customers a coupon in exchange for completing a brief survey about their favorite desserts. 20 of the customers accepted the offer.
The 20 customers who accepted the offer.
Sue surveyed 42 shoppers in the supermarket's bakery section about their purchasing habits.
Biased
Not all shoppers shop in the bakery section.
Ron polled the first 69 attendees at a concert.
Is this sample of the concert attendees likely to be representative?
not representative
The first people to arrive could not be like the rest of the population.
Name any Janitor.
Keith
Terry
Vincient
James
A teacher looked at 4 different homework problems from each assignment given last semester.
Each assignment last semester.
Winston polled 47 winners of a contest
The 47 winners
Brianna polled 92 students from each school in her county. Each school is the same size.
Random - any student could have been chosen.
To review for the final, Edwin did 7 random problems from each assignment in his class. Each assignment had an equal number of problems.
Is this sample of the problems assigned in the class likely to be representative?
Represetative
What is Ms. k's favorite subject?
math
Without looking, Eduardo flipped to a page in the phone book and called a number from that page. Repeating that approach, he called 843 phone numbers from the phone book.
People from the phone book.
Jennifer surveyed the first 2 shoppers at the market.
The first 2 shoppers.
Gabriel questioned 2 students in an introductory language class at her college.
Biased
Not all students take an introductory language class.
Kiera did 175 random math problems from each math book in her library. Each math book in the library has an equal number of problems.
Is this sample of the math problems in the library likely to be representative?
Representative
What was our first math lesson this year?
adding numbers with the same sign.