Unit 5B-Statistical Samples Quiz

What would be the population in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors
• all shoppers in the mall
• the shoppers who were asked their preferences

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

What would be the sample in this example?
Surveyors in a mall choose shoppers to ask about products they prefer.

• the surveyors
• all shoppers in the mall
• the shoppers who were asked their preferences

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A student wants to know which type of pizza the students at his high school prefer. Which option would give a unbiased, representative sample:

• Asking all the students in the hot lunch line.
• Asking 10 random students from each homeroom.
• Asking every other student who gets off a school bus.
• Asking all the 10th graders.

Tags

CCSS.6.SP.A.1

The mall sent a survey to 560 people. They found that 46 out of 108 people said they would shop at the mall if it opened this weekend. Predict the number of people who would shop at the mall.

• 189 people

• 204 people

• 230 people

• 239 people

Tags

CCSS.6.RP.A.3B

100 second graders were asked to do a book report about one of these four zoo animals.  The number of students who chose each animal is shown in the table.  If 250 second graders had to choose one of the four animals, predict how many would choose to write about a giraffe.

• 60 students

• 50 students

• 40 students

• 30 students

Aaron took a multiple choice test.  There were 25 questions, of which he answered 4 incorrectly.  At this rate, how many questions should Aaron expect to answer incorrectly if he takes a test with a total of 150 questions?

• 123
• 24
• 373
• 47

What is the mean?
4,5,6,7,3,4,10,1

• 40
• 48
• 5
• 8

Tags

CCSS.7.NS.A.3

Find the median of the data set:
18, 19, 17, 14, 20, 20, 15, 21

• 17
• 18.5
• 20
• 14

Tags

CCSS.7.EE.B.3

What is the definition of median?

• Add the numbers together and then divide by the number in the set.

• The difference between the largest and smallest number.

• The number in the middle when the numbers are in order from least to greatest.

• The number that appears most often.

Tags

CCSS.7.EE.B.3

93, 100, 82, 93, 67, 100, 67, 82, 93, 93
What is the mode of this data set?

• 26
• 93
• 33
• 82

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5