Samples and Populations

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

_______ is the entire group of objects or individuals considered for a survey.

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected. 

• systematic
• random sample
• convenience
• biased sampling

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.MD.B.6

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. 

• Convenience Sampling
• Systematic Sampling
• Random Sampling
• Volunteer response

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Why do we randomly select our samples?

• for control
• reduce bias
• so we don't get the same answers from everyone
• to eliminate confounding results

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative of all the students in the school?

• yes
• no

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A teacher selects 30 students out of 300 students in grade 6, to participate in a survey about recycling. She asks first 30 students that enters her classroom. Of the 30 students, 25 students refills their water bottles. How many students will refill the bottle?

• 250

• 350

• 500

• 450

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

The last 20 people that were leaving a mall on a single day were asked about their favorite hobbies.

In total, 1000 people entered the mall. 17 people said they like shopping.

From the sample, how many people can we predict would also like shopping.

• 85

• 50

• 850

• 120

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

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

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

2.  A homeowner divides their backyard into 5 sections, and randomly removes soil from sections.

• Biased
• Unbiased

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3