Inferences

1.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Biased
• Unbiased

7. A public library asked every 10th person who entered to name the type of book they were getting

• Biased
• Unbiased

3.  A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

• Biased
• Unbiased

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

Kim surveys 100 moviegoers that entered the movie theater in the first hour.  What type of sampling method is this?

• Random
• Convenience
• Biased

Every member of the larger group has an equal chance of being chosen.

• secondary sample
• systematic sample
• stratified sample
• random sample

You want to know what is the most favorite sport of 7th graders at BMS.  You ask 7th graders who want to participate to go to the office 5th period to complete a survey.  This is...

• Biased, because it is a convenience sample
• Unbiased
• Biased because it is an interval sample
• Biased because it is a volunteer sample

Amy’s current grades for her assignments in math class are 85, 90, 95, and 80. What grade does she have to earn on her next assignment to attain an average of 90? 

• 88
• 90
• 95
• 100

Betsy has scored a 94, 80, 89, 91 and 90 on her math tests. What must Betsy score on her next test to have a mean of exactly 90? 

• 96
• 91
• 90
• 89

Blake’s test scores are 86, 70, 72, 100, 96, and 80. Which score must Blake earn on his next test to have a mean grade of exactly 85? 

• 91
• 88
• 85
• 84

Tags

CCSS.6.SP.B.5C