Population & Sample

What is a measure of center?

• distance

• mean absolute deviation (MAD)

• mean

• sample

• population

Tags

CCSS.6.SP.A.3

What is a measure of variability?

• distance

• mean absolute deviation (MAD)

• mean

• sample

• population

Tags

CCSS.6.SP.A.3

You want to know the favorite sport of middle school students. Which group would provide the best random sample?

• Every tenth person who enters the stadium before a football game.

• Every fifth person who leaves the school building at the end of the school day.

• the girls' soccer team

• the band students

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

At Family Dollar in Caliente they received 1000 bags of Takis. Out of a random sample of 25 bags, 2 bags are open. How many in shipment would be open based on the sample?

• 2

• 25

• 80

• 1000

Tags

CCSS.7.SP.A.2

A random sample of a bike shipment showed that for every 50 bikes, 4 of them were missing parts. If the bike shop had 350 bike shipped this year, how many were missing parts?

• 
  

  $\frac{4}{50}=\frac{350}{x}$

• $\frac{x}{50}=\frac{350}{4}$
  

• $\frac{50}{350}=\frac{x}{4}$
  

• $\frac{4}{50}=\frac{x}{350}$
  

J & J's in Caliente predicts that out of 300 people that come buy food 60 of them will also buy desserts.

What percent of the people who come buy desserts?

• 20%

• 70%

• 40%

• 4%

Mrs. Finlinson collected data from the latest math test scores. She finds that the test has a low Mean Absolute Deviation (MAD). Which graph would best represent her observation?

• 
• 
• 
• 

Tags

CCSS.6.SP.B.5C

What does the Mean Absolute Deviation tell you?

• the average of the data pieces

• where the data pieces are centered on a number line

• how many dots are above each number on a dot plot

• how far the data pieces are spread out from the mean (average)

Tags

CCSS.6.SP.B.5C

Mr. Cluff randomly reads 20 student reports. He finds 6 of those twenty with spelling errors. If he read 90 student papers how many spelling errors will he find?

• 12

• 27

• 45

• 84

Tags

CCSS.7.SP.A.2

Explain how a survey from a phone book might not be a random sample.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1