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Working with Probability Sampling

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Working with Probability Sampling: An In-Class Assignment

 

Instructions:  Below are the names and characteristics of 60 people.  After fully reading the probability sampling strategies presented in your text (Bryman, Chapter 8 – Sampling) and notes, you are responsible for drawing three different types of probability samples.  Follow the directions carefully.  I recommend typing or neatly handwriting your responses directly to this assignment.

 

More to Read:

Points:  20 pts.

 

Due Date:  Please review the Canvas assignment for the assignment due date and time.

 

KEY M=Male, F=Female, FR=Freshman, SO=Sophomore, JR=Junior, SR=Senior

 

  1. Brad Pitt (M) (SO) 21. Dudley Dooright (M) (FR) 41. Lenny Bruce (M) (SO)
  2. Aaron Hernandez (M) (SO) 22. Carmen Miranda (F) (JR) 42. Doris Day (F) (SO)
  3. Billie Holiday (F) (FR) 23. Natasha Wilson (F) (FR) 43. Johnny Begood (M) (SO)
  4. Sonia Sotomayor (F) (JR) 24. Robert Plant (M) (JR) 44. Ella Fitzgerald (F) (FR)
  5. Randy Quaid (M) (FR) 25. Amy Henderson (F) (SR) 45. Jimmy Page (M) (FR)
  6. Phyllis Schlafly (F) (FR) 26. Ashley Rogers (F) (FR) 46. Jim Morrison (M) (SO)
  7. Jack Spratt (M) (SO) 27. Dick Cheney (M) (SO)       47. Georgia Southern (F) (SR)
  8. Richard Simmons (M) (JR) 28. Boris Badanov (M) (JR) 48. Anna Karenina (F) (SO)
  9. Fleaflicker Jones (M) (JR) 29. Tonya Heart (F) (FR) 49. Greg Brady (M) (SO)
  10. Kathy Walker (F) (SR) 30. Jackson Pollack (M) (SO) 50. Bill Sterner (M) (SR)
  11. Benjamin Moore (M) (FR) 31. Amy Wallace (F) (SR) 51. Billy Jo Bob (M) (JR)
  12. Phyliss Diller (F) (FR) 32. James T. Kirk (M) (FR) 52. Kimberly Flowers (F) (JR)
  13. Bob Knight (M) (FR) 33. Lorenzo Oznerol (M) (JR) 53. Cindy Crawfish (F) (SO)
  14. Timothy Leary (M) (SR) 34. Patricia Hearst (F) (SR) 54. Britney Houston (F) (FR)
  15. Brad Pitt (M) (JR) 35. Bernie Sanders (M) (SR) 55. Whitney Spears (F) (JR)
  16. Humpty Dumpty (M) (FR) 36. Karl Marcks (M) (FR) 56. Viola Flowers (F) (SR)
  17. Charlie Sheen (M) (FR) 37. Johnnie Two Bad (M) (SR) 57. Penelope Straights (F) (FR)
  18. Donald Trump (M) (SO) 38. Sarah Vaughn (F) (SO) 58. George Harrison (M) (JR)
  19. Bob Squarepants (M) (SR) 39. Bellatrix Lastrange (F) (JR) 59. Harriet Tubman (F) (SO)
  20. Natalie Portman (F) (SR) 40. Willie Shakespeare (M) (FR) 60. Uma Thurman (F) (JR)

 

Among the 60 research subjects above, there are:

33 Males and 27 Females, 19 Freshmen, 15 Sophomores, 14 Juniors, and 12 Seniors

 

 

THE SIMPLE RANDOM SAMPLE – (use the table of random numbers to randomly draw 20 students from the sampling frame and list their names and characteristics below)

 

  1. 2.

 

  1. 4.

 

  1. 6.

 

  1. 8.

 

  1. 10.

 

  1. 12.

 

  1. 14.

 

  1. 16.

 

  1. 18.

 

  1. 20.

 

 

  1. After drawing the sample, assess its overall representativeness. Is the sample representative by gender and/or school classification? Answer this question and discuss why or why not in the space provided below.

 

 

 

 

 

 

 

  1. Now add an additional 10 randomly selected names. Write their names and characteristics below

 

  1. 22.

 

  1. 24.

 

  1. 26.

 

  1. 28.

 

  1. 30.

 

Is the sample better represented by gender and school classification?  Answer this question and discuss why below.

 

 

THE SYSTEMATIC RANDOM SAMPLE – (randomly draw 20 students from the original sampling frame and list their names and characteristics below)

 

What is a sampling interval?

 

Calculate the sampling interval for your systematic random sample.  What is it? k =

 

What is a sampling ratio?

 

Calculate the sampling ratio for your systematic random sample.  What is it? sampling ratio =

 

Draw a random number to begin the systematic sampling process and then draw the sample.

 

 

  1. 2.

 

  1. 4.

 

  1. 6.

 

  1. 8.

 

  1. 10.

 

  1. 12.

 

  1. 14.

 

  1. 16.

 

  1. 18.

 

  1. 20.

 

  1. Is this sample representative by gender and/or school classification? Discuss why or why not. Is this sample any more representative of the population than the sample obtained from use of the simple random sample procedure?  Explain…

 

THE STRATIFIED RANDOM SAMPLE – (your sample is to be stratified proportionally by classification)

(randomly draw 20 students from the original sampling frame and list their names and characteristics below)

 

  1. 2.

 

  1. 4.

 

  1. 6.

 

  1. 8.

 

  1. 10.

 

  1. 12.

 

  1. 14.

 

  1. 16.

 

  1. 18.

 

  1. 20.

 

  1. Explain how you developed your stratified random sample by writing each step of the process below?

 

 

 

 

 

 

 

 

 

 

 

  1. Did use of the stratified random sample help you draw a more representative sample compared to the previous sampling strategies? Explain why or why not.

Last Updated on February 11, 2019

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