WorksheetsSampling and Population
Total questions: 20
Worksheet time: 5hrs 0mins
Mr. Thrasher wants to know how the students at Cedar Bluff rate the cafeteria. He surveyed the hungry baseball team after practice last week to rate the school cafeteria. Is this a biased sample of the school's population?
Yes, because it only asked one group of students
No, the baseball team has the smartest students
Yes, because it's voluntary survey
No, the baseball team are good food critics
Identify the Population:
Cherokee County Schools randomly selected 230 teachers to find out which technology resource its teachers feel is the most effective. What is the population in this situation?
230 Teachers
All Cherokee County teachers
All Cedar Bluff teachers
All Sand Rock and Spring Garden students
Identify the Sample:
The Huddle House wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The manager at Huddle House concluded that most customers do not order dessert. What is the SAMPLE in this scenario?
20 customers from Huddle House
All customers from Huddle House that evening
8 customers from Huddle House
The employees from Huddle House
Mrs. Connie wants to know the average student’s opinion of the tardy policy at our school. Which group of students should she survey in order to achieve the most accurate-non-biased results?
30 students who are often tardy
30 students who are rarely tardy
30 7th grade students
30 randomly selected students from our school
You want to know what is the favorite sport of 7th graders at CB. You ask 7th graders who play a sport to participate to go to the office 5th period to participate in the survey. This is...
Biased sample
Random sample
At Centre Middle School, the 7th graders will conduct a survey to decide where they want 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 Beta Club to choose a location
You know what a biased sample is. Using that information, what would you say an unbiased sampling is:
when you choose the group you think will give you the answer you want, accept volunteers or survey by convenience
when any member of the population is equally likely to be chosen for the sample
Mr. Walls randomly chose ten 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 every teacher is included in the sample
The city of Cedar Bluff has 832 registered voters. The election for mayor has 3 candidates. A telephone poll taken a day before the election of 67 voters that are friends of the candidates shows these results: 30 Smith, 27 Jones, 10 Brown. Name the sampling method used for this survey.
Convenience Sample
Random Sample
_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.
Sample
Population
Random Sample
Biased Sample
Mrs. Cathy wants to know how many students at Cedar Bluff enjoy solving math word problems. What is the best sampling method?
ask for 20 volunteers to discuss whether they enjoy solving math word problems
ask the last 20 people to arrive at CB this morning
Randomly ask 2 students in the hallway by Mr. B's room
Ask every 20th student that walks into school
You survey 20 people as they walk past you on the street. This best demonstrates ......
Biased sample
Convenience sample
Random sample
A newspaper randomly chooses 100 names from its subscriber list and then surveys those subscribers to find out if they read the sports section. This sample is ........
unbiased
biased
Coach Mullins surveys the students sitting in the back of her room by her desk. This can best be described as......
Biased sample
Random sample
Convenience sample
All seniors at Cedar Bluff School is an example of
a sample
a population
an outlier
The counselor surveyed all the eighth graders, 7th graders and one second grader about their favorite subject in school. Which group is an outlier?
8th graders
7th graders
2nd grader
What is the outlier of this group of data taken from a survey
94, 92, 88, 42, 87
94
92
42
87
The entire group of objects or individuals considered for a survey is called a _________________________
outlier
population
sample
A value much greater or much less than the others in a data set is called an __________________________. A piece of data that doesn't belong.
sample
outlier
population
