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.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

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

• Sample

• Population

• Random Sample

• Quartile

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

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

• Sample
• Population
• Random Sample
• Quartile

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.

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

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

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

Graham wants to find out the most popular football team at a game between the home team and the visiting team.  Which of the following methods will give him the most accurate results?

• a.  Surveying the cheerleaders for the home team
• a.  Surveying people wearing hats for the visiting team
• a.  Surveying a group of people standing in line for tickets
• a.  Surveying people who do not live in the home team’s city

Juan asked 10 of his friends what they thought about a new video game. Is this sample of the students in the school biased?

• True

• False

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

I want to simulate playing a game called Wahoo. You roll one die and must roll a 1 or a 6 in order to have your playing piece enter the game board. Using a number table do 10 trials. We want to answer the following: On average, how many rolls will it take to enter the board? 

• Using 1 digit, let 1 - 6 represent numbers on the die. Ignore 7 - 9 and 0, ignore repeats. Stop when you get a 1 or 6. Count the number of rolls in each trial. 
• Using 1 digit, let 1 - 6 represent numbers on the die, ignore 7 - 9 and 0, repeats are okay. Stop after 10 numbers. Count how many 1s and 6s in each trial.
• Using 1 digit, let 1 - 6 represent numbers on the die. Ignore 7 - 9 and 0, repeats are okay. Stop when you get a 1 or 6. Count the number of rolls in each trial. 
• Using 1 digit, let 1 - 6 represent numbers on the die. Ignore 7 - 9 and 0, ignore repeats. Stop when you get a 1 or 6. Count the number of 1s and 6s in each trial.