Review IV (probability/statistics

A survey should always be ____ and ____.

• random and biased
• random and unbiased

Tags

CCSS.HSS.IC.B.3

At an assembly 7 out of 10 students who entered the gym were carrying a backpack. Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?

• 49

• 490

• 210

• 421

Tags

CCSS.7.RP.A.3

A public library asked every 10th person who entered to name the type of book they were getting

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

What is the median of this data?

• 6.5

• 9

• 10.5

• 8

Tags

CCSS.7.SP.B.4

If you wrote a book, what would it be about?

What is the mode of this data?

• 7

• 10

• 8

• 6.5

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.3

CCSS.6.SP.A.1

CCSS.6.SP.A.2

What is the interquartile range (IQR) of this data?

• 2

• 7.25

• 9.5

• 2.25

Tags

CCSS.7.SP.B.4

What is the range of this data?

• 4

• 10.5

• 6.5

• 9

Tags

CCSS.7.SP.B.4