a series of question(s) used to obtain information about a group
What is a survey?
100
Tell whether the sample is random or convenient:
choosing two names out of a bowl (like in the Hunger Games)
What is random?
100
Identify the population in the situation:
A doctor surveys the first 15 parents to walk in his office because he wants to know where his patients live.
What is his patients?
100
Identify the sample in the situation:
A doctor surveys the first 15 parents to walk in his office because he wants to know where his patients live.
What is the first 15 parents to walk in his office?
100
In a survey to see how many pets each household had, the following answers were collected:
0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 8
What is the median?
What is 2?
200
the entire group that is being studied, everyone
What is the population?
200
Tell whether the sample is random or convenient:
choosing five of your closest friends
What is convenient?
200
Identify the population in the situation:
A mom surveys 12 random kids in the grocery store to see what the favorite flavor of ice cream is children in her town.
What is the children in her town?
200
Identify the sample in the situation:
A mom surveys 12 random kids in the grocery store to see what the favorite flavor of ice cream is children in her town.
What is 12 random kids in the grocery store?
200
In a survey to see how many pets each household had, the following answers were collected:
0, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 8
What is the mode?
What is 1?
300
a small part of the whole group that is studied to represent the whole group
What is a sample?
300
Tell whether the sample is random or convenient:
choosing every tenth person that walks in the building
What is random?
300
Identify the population in the situation:
The governor of North Carolina wants to know what the residents of Pender County think is the best vacation spot in the USA. He calls 250 random households to survey.
What is the residents of Pender County?
300
Identify the sample in the situation:
The governor of North Carolina wants to know what the residents of Pender County think is the best vacation spot in the USA. He calls 250 random households to survey.
What is the 250 random households?
300
In a survey to see how many pets each household had, the following answers were collected:
0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 8
What is the mean?
What is about 2.3?
400
when a sample is chosen randomly without biased
What is random sampling?
400
Tell whether the sample is random or convenient:
choosing one person from each of your classes
What is convenient?
Explanation: in order to be truly random, you would have to choose one person from every class, not just your classes
400
Identify the population in the situation:
A marine biologist is studying a school of dolphins to see what the dolphins in her area like to eat. There are 11 dolphins in the school she is studying.
What is the dolphins in her area?
400
Identify the sample in the situation:
A marine biologist is studying a school of dolphins to see what the dolphins in her area like to eat. There are 11 dolphins in the school she is studying.
What is the 11 dolphins in the school she's studying?
400
There's a lake near your home, and you want to know how many fish are in it. So you collect and tag 10 of them, then release. A week later, you catch 50 fish and 2 of them are tagged. What's the population of fish in your lake?
What is 250 fish?
500
when the sample is chosen based on easy access or simplicity
What is convenience sampling?
500
Tell whether the sample is random or convenient:
choosing every third person to walk by the office
What is convenient?
Explanation: not everyone in the school walks by the office, in order to be truly random, you would have to pick a location that everyone walks by
500
Identify the population in the situation:
You want to know which actor your friends think you look like the most. So you ask the friends in your class who they would pick.
What is all of my friends?
500
Identify the sample in the situation:
You want to know which actor your friends think you look like the most. So you ask the friends in your class who they would pick.
What is the friends in my class?
500
Two samples were collected to determine the favorite dessert of West Pender. The results are below, what can you infer from the two samples?
Pie Cake Ice Cream Cookies Other
Sample 1: 12 32 53 41 24
Sample 2: 19 35 48 39 21
What is ice cream being the favorite dessert of West Pender?
Or
What is pie being the least favorite dessert of West Pender?