Analyzing Populations and Samples TEST RETAKE

What is the mean of the data: 15, 20, 25, 17, 18

• 15

• 16

• 18

• 19

Tags

CCSS.6.SP.B.5C

What is the MAD of the data: 15, 20, 25, 17, 18

• 2

• 3.6

• 5.2

• 19

Tags

CCSS.6.SP.B.5C

Zara wants to know how teachers in the local school district feel about extending the school day to 30 minutes longer. Which method will produce a representative sample and therefore provide valid inference?

• Survey all the teachers who have publicly protested or supported the proposal.

• Survey the first 30 teachers who arrive at Zara's school in the morning.

• Survey a random sample of 30 teachers within the school district.

• Survey a random sample of 30 teachers and parents of kids within the district.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The entire group studied.

• sample
• population

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

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.HSS.IC.A.1

The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours.  What is the population?

• People who visit the bookstore.
• People who buy mystery novels.
• Residents of the town
• People who like to read.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Cecily is wondering if students like the uniform at school. She surveyed 80 students and 25 said that they prefer wearing a uniform.

There are 640 students at the school. How many would expect to prefer wearing a uniform?

Type only the number, not a fraction

Mathematical Equivalence

ON

Tags

CCSS.7.SP.A.2

What is the median?

• 62
• 58
• 66
• 60

Tags

CCSS.6.SP.B.5C

Which box and whisker plot has the smallest lower quartile (Q1)?

• Top plot
• Bottom plot

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Which city has a higher median?

• Millersburg
• Arcadia

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1