Sampling and Inferences

The entire set of people or objects that is being studied.

• Population
• Sample
• Sampling Plan
• Data Point

Choosing a sample in a way that everyone has an equal chance of being in the sample.

• Convenience Sampling
• Random Sampling
• Voluntary-Response Sampling
• Systematic Sampling

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

A group of people or objects selected from a population.

• Population
• Sample
• Sampling Plan
• Data Point

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Which of the following would be the BEST definition for the word INFERENCE?

• making a guess about something
• a conclusion reached on the basis of evidence AND reasoning
• creating false presumptions
• summarizing a portion of text

What type of survey sample is it when one portion of the population is favored over another?

• Unbiased sample
• Biased sample

What type of survey sample is it when the entire population is being equally represented?

• Unbiased sample
• Biased sample

The table shows the results of a survey of 200 people attending a hockey game.
The attendance for the hockey game is about 25,000 visitors each game.  Based on the table, how many people out of 25,000 could be expected to buy a pennant?

• 1,375
• 1,650
• 2,750
• 3,850

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.MD.A.2

A high school has 1500 students.  In a random sample of 50 students, 32 own one or more pets.  Predict the number of students at the high school who own one or more pets.

• 480
• 960
• 48
• 96

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

Carrie spoke with the 27 donors who gave the most money.  Is this a random sample of the donors?

• yes
• no

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Which method is most likely to produce a random sample of the members of your class?

• listing the first six students that come to mind
• choosing the five oldest students in the class
• writing the name of each student on a separate piece of paper and then drawing these slips from a hat
• selecting the first six students to arrive at class

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3