MATH 120: Introduction To Statistics Lime Spring Week 8 Final Exam
1. 10 Students Take An Exam And Earn The Following Scores: 86, 96, 90, 92, 79, 94, 86, 74, 82,
And 91 What Is The Mean Of The Scores?
ANS: 87.
2. 10 Students Take An Exam And Earn The Following Scores: 86, 96, 90, 92, 79, 94, 86, 74, 82,
And 91 What Is The Median Of The Scores?
ANS: 88.
3. 10 Students Take An Exam And Earn The Following Scores: 86, 96, 90, 92, 79, 94, 86, 74, 82,
And 91 What Is The Mode Of The Scores?
ANS: 86.
4. While Conducting Market Research, An Automobile Manufacturer Looks At The Number Of
Suvs And Sedans Produced In The Prior Year. What Type Of Data Is This?
ANS: Quantitative Data.
5. While Conducting Market Research, An Automobile Manufacturer Asks Consumers About
Their Preferences Between Suvs And Sedans. What Type Of Data Is This?
ANS: Qualitative Data.
6. A Political Think Tank Wants To Conduct A Poll Of Likely Voters In A State. If The Think
Tank Breaks The State Into 20 Groups With Common Characteristics And Then Randomly
Samples Each Group, What Type Of Sampling Is This?
ANS: Stratified Sampling.
7. A Research Team At A Medical Device Manufacturer Wants FDA Approval For The
Manufacturer's Latest Product. The Team Sets Up A Study Where Half Of The Participants In
The Study Use The Device And Half Of The Participants In The Study Do Not. When The
Study Is Over, The Research Team Compares The Results Of The Two Groups. Which Type
Of Study Is This?
ANS: Experimental Study.
8. If 10,000 Students Take A Standardized Test, Which Type Of Graph Would Be Most
Helpful For Understanding The Data?
ANS: A Histogram..
, 9. If The Graph Is Displaying The Estimated Value Of Homes In An Area, Approximately
What Is The Average Home Value?
ANS: $375K.
10. Which Answer Explains Why The Average Home Value Is Above The Median Home Value?
ANS: A Few Outlier Home Values Are Skewing The Average High.
11. If There Is A 30% Chance Of Rain Each Of The Next Two Days, What Is The Probability Of
Rain Both Days? (Assume Rain Is An Independent Event.)
ANS: 9%
12. If There Is A 60% Chance Of Rain Each Of The Next Two Days, What Is The Probability That It
Does Not Rain On Either Day? (Assume Rain Is An Independent Event.)
ANS: 16%
13. Roulette Is A Game Of Chance Using A Wheel With 38 Colored Pockets And A Ball That
Randomly Lands In One Of The Colored Pockets. In The American Version Of Roulette, There
Are 18 Red Pockets, 18 Black Pockets, And 2 Green Pockets. What Is The Probability That A
Gambler Betting On Green Will Win?
ANS: 16
1. 10 Students Take An Exam And Earn The Following Scores: 86, 96, 90, 92, 79, 94, 86, 74, 82,
And 91 What Is The Mean Of The Scores?
ANS: 87.
2. 10 Students Take An Exam And Earn The Following Scores: 86, 96, 90, 92, 79, 94, 86, 74, 82,
And 91 What Is The Median Of The Scores?
ANS: 88.
3. 10 Students Take An Exam And Earn The Following Scores: 86, 96, 90, 92, 79, 94, 86, 74, 82,
And 91 What Is The Mode Of The Scores?
ANS: 86.
4. While Conducting Market Research, An Automobile Manufacturer Looks At The Number Of
Suvs And Sedans Produced In The Prior Year. What Type Of Data Is This?
ANS: Quantitative Data.
5. While Conducting Market Research, An Automobile Manufacturer Asks Consumers About
Their Preferences Between Suvs And Sedans. What Type Of Data Is This?
ANS: Qualitative Data.
6. A Political Think Tank Wants To Conduct A Poll Of Likely Voters In A State. If The Think
Tank Breaks The State Into 20 Groups With Common Characteristics And Then Randomly
Samples Each Group, What Type Of Sampling Is This?
ANS: Stratified Sampling.
7. A Research Team At A Medical Device Manufacturer Wants FDA Approval For The
Manufacturer's Latest Product. The Team Sets Up A Study Where Half Of The Participants In
The Study Use The Device And Half Of The Participants In The Study Do Not. When The
Study Is Over, The Research Team Compares The Results Of The Two Groups. Which Type
Of Study Is This?
ANS: Experimental Study.
8. If 10,000 Students Take A Standardized Test, Which Type Of Graph Would Be Most
Helpful For Understanding The Data?
ANS: A Histogram..
, 9. If The Graph Is Displaying The Estimated Value Of Homes In An Area, Approximately
What Is The Average Home Value?
ANS: $375K.
10. Which Answer Explains Why The Average Home Value Is Above The Median Home Value?
ANS: A Few Outlier Home Values Are Skewing The Average High.
11. If There Is A 30% Chance Of Rain Each Of The Next Two Days, What Is The Probability Of
Rain Both Days? (Assume Rain Is An Independent Event.)
ANS: 9%
12. If There Is A 60% Chance Of Rain Each Of The Next Two Days, What Is The Probability That It
Does Not Rain On Either Day? (Assume Rain Is An Independent Event.)
ANS: 16%
13. Roulette Is A Game Of Chance Using A Wheel With 38 Colored Pockets And A Ball That
Randomly Lands In One Of The Colored Pockets. In The American Version Of Roulette, There
Are 18 Red Pockets, 18 Black Pockets, And 2 Green Pockets. What Is The Probability That A
Gambler Betting On Green Will Win?
ANS: 16
