WorksheetsPopulations and Samples in Probability
Total questions: 28
Worksheet time: 43mins
Name
Class
Date
1.
_______ is a part of a group being surveyed.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
2.
_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
3.
_______ is the entire group of objects or individuals considered for a survey.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
4.
True or False: all samples lead to a good prediction about an entire population.
a)
True
b)
False
5.
A school surveys all 7th grade boys to determine what to sell in the school store. This sample is _________.
a)
Biased
b)
Unbiased
c)
Representative
d)
Peanut butter cups
6.
A school survey asked 50 girls to identify their favorite items on the school cafeteria menu. This sample is ________________.
a)
Biased
b)
Unbiased
c)
Representative
d)
Numerical
7.
A student wants to know which type of pizza the students at his high school prefer. Which option would give a unbiased, representative sample:
a)
Asking all the students in the hot lunch line.
b)
Asking 10 random students from each homeroom.
c)
Asking every other student who gets off a school bus.
d)
Asking all the 10th graders.
8.
A city council member wanted to know how her constituents felt about a planned rezoning. She randomly selected 75 names from the city phone directory and conducted a phone survey.
a)
The population is everyone listed in the city phone directory; the sample is the 75 people selected.
b)
The population is residents of the city; the sample is the registered voters in the city.
c)
The population is registered voters in the city; the sample is everyone listed in the city phone directory.
9.
A safety inspector conducts air quality tests on a randomly selected group of 7 classrooms at an elementary school.
a)
The population is all classrooms in the district; the sample is the 7 classrooms selected.
b)
The population is all classrooms in the elementary school; the sample is the 7 classrooms selected.
c)
The population is all elementary students in the school; the sample is the students in the 7 classrooms selected.
10.
The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?
a)
The students will be selected from the choir
b)
The students will be selected randomly throughout the school
c)
The students will be selected on Wednesday afternoon before the choir concert
d)
The choir director will select five students from each of the forty homerooms in the school
11.
The TV station wants to get the opinion of viewers on the look of a new game-show set. The station's staff calls random people in the phone book. Is this biased or unbiased?
a)
Biased
b)
Unbiased
12.
I survey a senior citizen center to gain information about the population of NE Oklahoma. Which of the following best describes my population sample?
a)
Biased, sample is randomly taken or representative of population.
b)
Biased, sample is not randomly taken or representative of population.
c)
Representative, sample is randomly taken & representative of population.
d)
Representative, sample is not randomly taken or biased in terms the of population.
13.
I surveyed 100 people at a grocery store by selecting every 3rd person that entered, does this sample represent the local population?
a)
Yes, it is random and unbiased.
b)
Yes, it is random and biased.
c)
No, while it is random, it is also biased.
d)
No, while it is random, it is also unbiased.
14.
I drew 10 names from a hat containing the names of every student that I teach, what type of sample have I taken?
a)
A random sample.
b)
A biased sample.
15.
4. A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.
a)
Biased
b)
Unbiased
16.
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?
a)
thirty students who are often tardy
b)
thirty students who are rarely tardy
c)
thirty of her friends
d)
thirty randomly selected students from her school
17.
To determine how often people eat out, every tenth person entering a fast food restaurant is surveyed.
a)
Biased Sample
b)
Unbiased Sample
18.
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?
a)
People who visit the bookstore.
b)
People who buy mystery novels.
c)
Residents of the town
d)
People who like to read.
19.
A student surveys mathematics teachers to get their opinion on teaching. What is the sample?
a)
All teachers in the world.
b)
All teachers within the school.
c)
All mathematics teachers in the school.
d)
All teachers except mathematics teachers.
20.
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?
a)
The sample didn't include students.
b)
The sample is too small.
c)
The sample can only be accurate if each teacher is included in the sample
d)
English teachers don't drink juice!
21.
A radio station in Raleigh, NC wants to know the most popular song of the week. The DJ surveys random listeners who call in throughout the week. What is the population of the DJ’s survey?
a)
all the people in Raleigh, NC
b)
listeners of this radio station
c)
the listeners who call the station
d)
the most popular song of the week
22.
The part of the population being studied
a)
population
b)
sample
c)
random
23.
What would be the population in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.
Surveyors in a mall choose shoppers to ask about products they prefer.
a)
the surveyors
b)
all shoppers in the mall
c)
the shoppers who were asked their preferences
d)
the workers at Macy's
24.
The entire group studied.
a)
sample
b)
population
25.
A music store gives comment cards to all members of its Jazz Club to find out about satisfaction with the club's features. Identify the sample.
a)
People who play instruments.
b)
All music store customers except Jazz Club members.
c)
All music store customers
d)
Jazz Club members
26.
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?
a)
Yes
b)
No
27.
The Candlelit-Dinner Candle Store surveys its Monday customers to find out their opinion on a new scented candle. Is this biased or unbiased?
a)
Biased
b)
Unbiased
28.
According to a random telephone survey, 85% of all working adults in the U.S. are satisfied with their current job. If I asked 500 adults, how many do you predict would be satisfied with their current job?
a)
85 adults
b)
340 adults
c)
500 adults
d)
425 adults
100 %
