Elearning 1/23/24 alg 1 (Bias, mode, mean, mean)

Determine if the following study is biased.

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

• Biased

• Unbiased

Determine if the following study is biased.

To see who has a computer at home the front office asks 10 randomly chosen students from each grade.

• Biased

• Unbiased

You want to know how many students catch the bus to go home.  You go to the bus stop and ask students how they go home from school.  Is this a random sample or biased sample?

• BIASED
• RANDOM

A student wants to know which type of pizza the students at his middle school prefer. Which option would give a unbiased, representative sample:

• Asking all the students in the hot lunch line.

• Asking 10 random students from each homeroom.

• Asking every other student who gets off a school bus.

• Asking all the 8th graders.

Determine if the following study is biased.

A senator wants to how she is doing. She sends a survey to 1000 registered voters in her party.

• Biased

• Unbiased

Determine if the following study is biased.

A teacher decides to survey the students in her classes to find out their opinion on the new menu in the cafeteria.

• Biased

• Unbiased

Determine if the following study is biased.

The first 100 people at the park Thursday were asked if dogs should be off leashes in the park.

• Biased

• Unbiased

Determine if the following study is biased.

A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.

• Biased

• Unbiased

Find the median of these numbers:
4,2,7,4,3

• 2
• 5
• 7
• 4

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1
• 6
• 4.5
• 4