Statistics Review - January

If there are 50 men and 70 women in your survey because there are 500 men and 700 women in the field of study, then you have done a ____________ survey

• Convenience
• Cluster
• Simple Random
• Stratified

Tags

CCSS.HSS.IC.B.3

If you survey every 20th person from the school directory, you have used the  ____________ sampling method

• Convenience
• Cluster
• Systematic
• Stratified

Tags

CCSS.HSS.IC.B.3

Jessica wants to know her final grade. She got a 95 in Quarter 1, a 90 in Quarter 2, a 34 on the Midterm, a 75 in Quarter 3, a 70 in Quarter 4 and a 30 on the Final.
Each Quarter grade is weighted 20%. The Midterm and the Final are weighted 10% each.
What is her final grade? 

• 72.4%
• 65.7%
• 39.4%
• 75.8%

Tags

CCSS.6.RP.A.3C

Which of the following describes the distribution of the data set
A={0, 5, 16, 17, 27, 30, 70}

• Skewed Right
• Skewed Left
• Symmetric, but not Uniform
• Uniform

What is the standard deviation of the sample data set
{0, 5, 16, 17, 27, 30, 70}

• 23.13
• 21.41
• 8.69
• 7.10

A bag of marbles has 5 red marbles (R), 6 blue marbles (B), 2 white marbles (W) and 7 yellow marbles (Y). A trial consists of picking two marbles from this bag without replacement. 
Find P(B₂ | B₁), the probability that the second marble picked is blue given that the first one was blue.

• 0.2632
• 0.25
• 0.30
• 0.0789

Tags

CCSS.HSS.CP.B.6

There are 32 ice cream flavors available at an ice-cream shop and you want to buy a three-scoop cone.
How many possible cones do you have to choose from if you want each scoop to be a different flavor and in a particular order? 

• 29,760
• 32,768
• 4,960
• 96

A football team has a 20% chance of winning its first game. If it wins, it has a 50% chance of winning its second game. However, if it loses, it has only a 10% chance of winning its second game.
What is the probability that this team wins its first two games?

• 18%
• 16%
• 24%
• 8%

Which of the following is a good estimate for the correlation value for the scatter plot shown in this image? 

• -0.7
• -0.2
• 0.2
• 0.7

Tags

CCSS.HSS.ID.C.8

Which of the following data sets is qualitative?

• Zip Codes
• Heights of females
• Bears per zoo
• Planets discovered in 2010