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?

thirty randomly selected students from her school

thirty students who are often tardy

thirty students who are rarely tardy

Which of the following is a key distinction between well designed experiments and observational studies?

An experiment can show a direct cause-and-effect relationship, whereas an observational study cannot.

Experiments involve random sampling and observations do not.

Experiments are more expensive than observational studies

Experiments are less costly to conduct than observational studies.

Which is the best way to represent answering 25 multiple-choice questions with 4 choices for each answer?

spin a spinner with four sections 25 times

be representative of the population

be obtained in the easiest way possible

be representative of people who volunteer

A numerical value summarizing the sample data

a planned activity whose results yield a set of data

a numerical value that summarizes all of the data of an entire population

the set of values collected in a statistical study

New York Times Poll on women’s issues interviewed 1025 women randomly selected from the United States. One question was “Many women have better jobs and more opportunities than they did 20 years ago. Do you think women had to give up too much in the process, or not?” Forty-eight percent of women in the sample said “Yes.” Why can't we just say that 48% of women felt they gave up too much?

Not all samples would result in 48%

The margin of error might change.

The confidence interval might change

A recent survey found that 77% of high schoolers use their phones more than 4 hours a day on average. The margin of error was 3%. What is the interval for which we could expect to find the truth of the population?

50 million high schoolers - 120 million

Math 3 - Statistics

Quiz

•

Mathematics

•

10th - 12th Grade

•

Practice Problem

•

Medium

•

CCSS

HSS.IC.B.3, HSS.IC.A.1, 7.SP.A.1

+10

Standards-aligned

katie sherman

Used 98+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Why do we randomly select our samples?

to increase bias

to reduce bias

so we don't get the same answers from everyone

because it's easier

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

Random Sample

Convenience Sampling

Voluntary Response

Systematic Sampling

Tags

CCSS.7.SP.A.1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the first five who raise their hands.

Systematic

Convenience

Voluntary Response

Simple Random

Tags

CCSS.7.SP.A.1

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.

simple random

Voluntary Response

Convenience

Systematic Random

Tags

CCSS.7.SP.A.1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 50 blocks and survey all households on each selected block.
This is an example of:

Simple Random Sample

Stratified Random Sample

Cluster Random Sample

Systematic Random Sampling

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ___ is a large group that includes everything being studied.

Sample

Stratified Sampling Method

Population

Voluntary-Response

Tags

CCSS.HSS.IC.A.1

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A ___ is a small portion of the population used to gather data from.

Systematic Sampling Method

Sample

Population

Bias

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

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Math 3 - Statistics

25 questions

Why do we randomly select our samples?

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.This is a form of:

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.She selects the first five who raise their hands.

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.She selects the five closest to her desk.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 50 blocks and survey all households on each selected block. This is an example of:

A ___ is a large group that includes everything being studied.

A ___ is a small portion of the population used to gather data from.

Researchers want to determine if there is a relationship between whether or not a woman smoked during pregnancy and the birth weight of her baby. Researchers examined records for the past five years at a large hospital.What type of study is described?

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Discover more resources for Mathematics

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the first five who raise their hands.

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 50 blocks and survey all households on each selected block.
This is an example of:

Researchers want to determine if there is a relationship between whether or not a woman smoked during pregnancy and the birth weight of her baby. Researchers examined records for the past five years at a large hospital.

What type of study is described?