Random Sampling

If you choose 5 bingo balls from a basket of 50 balls, what sampling technique are you using?

Tags

NGSS.HS-LS3-3

Lana and Jeff each randomly surveyed 15 students about their favorite types of movies. What would you expect to see in the samples? Select all that apply.

• Different members are found in each sample.

• Some members may possibly overlap in each sample.

• Each sample gave the same responses.

• Both samples could be representative of the population.

• Both samples include only Lana and Jeff's friends.

Tags

NGSS.HS-LS3-3

The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit Catalina Island or Camp Mosaic for their end-of-year trip. Which of the following is a representative sample of the population? Select all that apply.

• 20 sixth-grade students, 20 seventh-grade students, and 20 eighth-grade students

• 10 seventh-grade boys and 10 seventh-grade girls

• 25 seventh-grade students

• 15 seventh-grade boys and 5 teachers

• 25 students from the school

Tags

NGSS.HS-LS3-3

What is the highest score in the class?

• 88%
• 100%
• 13
• 98%

A beverage company wants to see if people in the United States like their new logo. Which of the following would be the best selection for a sample.

• 2,000 middle school students

• A selection of logo designers

• A selection of shoppers from different states

• All of the people in the United States

Tags

NGSS.HS-LS3-3

True or False:

You want to see how many students take the bus home from school. You go to the bus stop and ask students how they get home everyday. This is a good, representation of the population.

• True

• False

Tags

NGSS.HS-LS3-3

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the first five who raise their hands.

• Systematic
• Convenience
• Voluntary Response
• Simple Random

Based on the results of this survey, which elective was least popular and should be canceled?

• Spanish

• Theater

• Art

Poole wants to know how students at OV rate the school lunch. I surveyed my IB Psych class to rate the food. Is this a biased sample of the school's population?

• Yes because it is a convenience sample. The sample is asking a very specific group that may not accurately match the population.

• No, the IB Psych class has the smartest students and the best foodies.

• Yes, because it is a voluntary survey that only interested students took.

• No, Poole should have asked the culinary class since have more experience with food.

A ______ is the entire set of objects from which data might be collected

• sample

• population

• sample statistic

• population characteristic