Samples, Population, Proportions

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

_________ is a sample in which each individual or object in the entire population has na equal chance of being selected.

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.B.4

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

• Sample
• Population
• Random Sample
• Quartile

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours.  What is the population?

• People who visit the bookstore.
• People who buy mystery novels.
• Residents of the town
• People who like to read.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?

• All teachers in the world.
• All teachers within the school.
• All mathematics  teachers in the school.
• All teachers except mathematics teachers.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A new cable TV station wants to study the viewing habits of households.  The station surveys every household that purchased a new TV within the last 2 years in New York.  Is this random sampling?

• Yes
• No

Tags

CCSS.7.SP.A.1

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.7.SP.A.1

CCSS.7.SP.A.2

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.7.SP.A.1

CCSS.7.SP.A.2

A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this sample is biased?

• The sample didn't include students.
• The sample is too small.
• The sample can only be accurate if each teacher is included in the sample

Tags

CCSS.7.SP.A.1

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year
• to randomly choose some 7th grade students to select a location
• to ask all 7th grade teachers and administrators for a location
• to ask the student council to choose a location

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2