Random Sampling and Statistics

According to a random telephone survey of 200 adults, 75% of all working adults in the U.S. are satisfied with their current job. What is the population in this survey?

• 200 adults
• adults in the U.S.
• 75% of adults

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Zoie completes a report by asking 70 students across campus. She found that 48% of CTMS students do not wash their hands after using the bathroom. What is the sample size?

• 48
• 100
• 70
• CTMS students

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students
• 200 students 
• 320 students
• 8,000 students

Tags

CCSS.6.RP.A.3B

• A
• B
• C
• D

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

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 not a good sample in this case?

• The sample didn't include students.
• The sample is too small.
• The sample can only be accurate if each teacher is included in the sample

Tags

CCSS.7.SP.A.1

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 students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The entire group studied is called the

• sample
• population

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The part of the population being studied is called the

• population
• sample
• random

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A U.S. senator from Maine wants to find out the opinion of the voters in his state on issues concerning education.  The office of the senator passes out surveys on ten street corners in the five major cities in the state of Maine.  Is this random?

• Yes
• No

Tags

CCSS.7.SP.A.1

Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative of all the students in the school?

• yes
• no

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2