CCSS.Math.Content.7.SP.A.2

How many students were greater than or equal to 60 inches tall?

• 21
• 11
• 17
• 6

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CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

An investigation of the opinions or experience of a group of people, based on a series of questions. 

• Statistics
• Survey
• Histogram
• Data

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CCSS.Math.Content.7.SP.A.2

A travel club has 3,000 members.  A random sample of 50 of the club members found that 12 people like mountain vacations best.  Which statement is NOT supported by the sample data? 

• Twenty-four percent of those sampled say they like mountain vacations best.  
• An estimated 720 club members would likely say they enjoy mountain vacations best. 
• Almost one-quarter of club members would likely say they enjoy mountain vacations best. 
• More than 2,500 club members would likely say they prefer other vacations over mountain vacations. 

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CCSS.Math.Content.7.SP.A.2

Parents at a middle school were randomly selected to participate in a survey.  Forty-Two out of 60 parents who were surveyed support a proposal to buy new computers.  There are 456 parents with students at the middle school.  Predict how many of these parents are likely to support the proposal. 

• 42 parents
• 70 parents
• 137 parents 
• 319 parents

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CCSS.Math.Content.7.SP.A.2

The histogram shows the birth weights of 100 new born babies.  How many babies weighed 8 pounds or more?

• 22
• 23
• 30
• 45

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CCSS.Math.Content.7.SP.A.2

Marianne wanted to know students' opinion on the new schedule at school. She places all students' names in a container and picks out 20 to survey. 

• Convenience Sampling
• Systematic Sampling
• Random Sampling
• Volunteer response

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CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

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?

• 85 adults
• 340 adults
• 500 adults
• 425 adults

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CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

Manny wants to know how many students at CTMS enjoy solving math problems. What is the best sampling method?

• ask for 20 volunteers to discuss whether they enjoy solving math problems
• ask the last 20 people to arrive at CTMS 
• Randomly ask 2 students in the hallway
• Ask every 20th student that walks into school

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CCSS.Math.Content.7.SP.A.2

Jaime surveyed customers in a restaurant to find out their favorite meal. One person in the restaurant will be picked at random. Based on the given information, which statement is true?

• This person's favorite meal is twice as likely to be hamburger and french fries as it is to be spaghetti.

• This person's favorite meal is 4 times as likely to be chili as it is to be vegetarian delight.

• This person's favorite meal is more likely to be chili than hamburger and french fries.

• This person's favorite meal is equally likely to be either vegetarian delight or spaghetti.

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CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1

There are 400 students at Polly's school. She surveyed a random sample of 80 students to find their favorite hobby. 19 said they like to read. 30 said they like to be with friends. 8 said they like to do crafts. 23 said they like to play sports. Polly infers that doing crafts is the least popular hobby at her school.

Yovani estimates that about 200 students in the school favor playing sports as a hobby. Do you agree?

• Yes, I used a proportion to find the number of students in the school who likely to prefer to play sports. 23/80 = 200/400; 200 students

• No, I used a proportion to find the number of students in the school who likely to prefer to play sports. 23/80 = 115/400; 115 students

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CCSS.Math.Content.7.SP.A.2

CCSS.Math.Content.7.SP.A.1