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# Compare and contrast the four (4) basic levels of measurement: nominal, ordinal, interval, and ratio.

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We have stressed the importance of knowing how to measure the scores of various assessment techniques to determine how well they serve as predictors of future job performance. This activity is designed to illustrate your familiarity with the basic concepts of measurement. When responding to these questions, use your text and any Internet resources you feel appropriate. Your Activity responses should be both grammatically and mechanically correct and formatted in the same fashion as the Activity itself. If there is a Part A, your response should identify a Part A, etc. In addition, you must appropriately cite all resources used in your response and document them in a bibliography using APA style. (100 points) (A 3-page response is required.)

Part A Describe the six (6) step general process for using measures in staffing initiatives. Include in your response a definition of the term “attribute.” (24 points)

Part B John wonders how many points, on average, a typical applicant scores on an entrance exam. He collects the entrance exam scores for the last thirty (30) applicants. Here are their exam scores.

24, 21, 14, 17, 10, 3, 20, 23, 24, 22, 21, 6, 17, 14, 20, 23, 14, 52, 7, 17, 34, 10, 7, 27, 14, 31, 7, 22, 35, 0

1. Compare and contrast the measures of central tendency (Mean, Median, Mode). (15 points) 2. Using the array of numbers shown above, calculate the following for this data. (15 points) a. Mean Score b. Median Score c. Mode

Part C Levels of Measurement 1. Compare and contrast the four (4) basic levels of measurement: nominal, ordinal, interval, and ratio. (12 points) 2. Read the following statements and indicate which level of measurement each illustrates. (15 points) a. What is your political party affiliation? b. The motion picture industry movie classifications are G, PG, PG13, and R. c. The day, month, and year on a calendar. d. Height in feet, inches, or centimeters. e. Please state your satisfaction with this product as very satisfactory, satisfactory, neutral, unsatisfactory, or very unsatisfactory.

Part D Airline pilots must meet minimum height and maximum weight requirements. To determine if a maximum height requirement should be added to the qualifying criteria for a pilot position, Human Resources is analyzing the data (height and weight) for their current pilots. Below is a scatter diagram that relates the height of pilots with their weight. Define the term “scatter diagram” and provide an analysis of the data presented below. If the maximum weight for a pilot is 200 pounds, should a maximum height be adopted as a qualification? Explain. (19 points)

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