Random Sampling

A sportswriter wants to know how strongly Toledo residents support the Toledo MudHens baseball team. She stands outside the stadium one summer day to interview the first 20 people that enter the stadium. The population for this survey is...

• all people at the game
• all MudHens fans
• all Toledo residents
• everyone in the world

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

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

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

Manny wants to know how many students at CTMS enjoy solving math problems. What is the best sampling method?

• ask for 20 volunteers to discuss whether they enjoy solving math problems
• ask the last 20 people to arrive at CTMS 
• Randomly ask 2 students in the hallway
• Ask every 20th student that walks into school

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 not a good sample in this case?

• 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

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The entire group studied is called the

• sample
• population

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A U.S. senator from Maine wants to find out the opinion of the voters in his state on issues concerning education.  The office of the senator passes out surveys on ten street corners in the five major cities in the state of Maine.  Is this random?

• Yes
• No

Tags

CCSS.7.SP.A.1

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