Resources
Testimonials
Plans
Sign in
Sign up
Resources
Testimonials
Plans
Home
Math Problems
Grade 7
Identify representative, random, and biased samples
Tisha questioned
37
37
37
members of the city's gym.
\newline
Is this a random sample of the city's residents?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Sandeep tossed a fistful of silver coins into the air, then picked up the
7
7
7
coins that landed heads up.
\newline
Is this sample of the coins likely to be representative?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Lena surveyed the
7
7
7
top-ranking students in the high school.
\newline
Is this a random sample of the students in the school?
\newline
Choices:
\newline
(A) yes
\newline
(B) no
Get tutor help
Matt multiplies
9
×
11
×
11
9 \times 11 \times 11
9
×
11
×
11
on the board.
\newline
He works out that it equals
1
,
089
1,089
1
,
089
. Does that sound about right?
\newline
Choices:
\newline
(A)Yes.
\newline
(B)No, it is much too high.
\newline
(C)No, it is much too low.
Get tutor help
Dan surveyed his
2
2
2
favorite soccer players in the league about their training techniques.
\newline
Is this a random sample of the soccer players in the league?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Tristan questioned
17
17
17
members of the city's gym.
\newline
Is this sample of the city's residents likely to be biased?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Isabelle spoke with the
13
13
13
donors who gave the most money.
\newline
Is this sample of the donors likely to be representative?
\newline
Choices:
\newline
(A) yes
\newline
(B) no
Get tutor help
Paula surveyed the
47
47
47
customers in a shoe store on a Monday morning.
\newline
Is this sample of the shoe store's customers likely to be representative?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Miguel put the names of all the cities in the state into a jar. Then, he drew
7
7
7
names out of the jar.
\newline
Is this a random sample of the cities in the state?
\newline
Choices:
\newline
(A) yes
\newline
(B) no
Get tutor help
Mr. McCormick, the psychology teacher, invited his students stay after school to participate in a study on learning styles so that he could better understand how to teach them.
10
10
10
of his students participated.
\newline
Is this a random sample of the teacher's students?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Trudy researched
6
6
6
downtown districts throughout each county in her state. Each county has an equal number of downtown districts.
\newline
Is this sample of the downtown districts in the state likely to be representative?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Maya surveyed
17
17
17
passengers on a city bus.
\newline
Is this a random sample of the inhabitants of the city?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Leon polled the last
62
62
62
athletes to finish a bike race.
\newline
Is this a random sample of the athletes in the bike race?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
Kwame surveyed a large random sample of Chicago, Illinois households to learn the number of cars they have. The results of the survey are most representative of which of the following populations?
\newline
Choose
1
1
1
answer:
\newline
(A) US households
\newline
(B) Midwestern households
\newline
(C) Illinois households
\newline
(D) Chicago, Illinois households
Get tutor help
