University of Phoenix Material Parametric andNonparametric Data Identification A

Question

University of Phoenix Material

Parametric andNonparametric Data Identification Assignment

Label each of the following situations“P” if it is an example of parametric data or“NP” if it is an example of nonparametric data.

1.     Amanufacturer produces a batch of memory chips (RAM) and measuresthe mean-time-between-failures (MTBF). The manufacturer thenchanges a manufacturing process and produces another batch andagain measures the MTBF. Did the change to the process improve theMTBF? ___

2.     From awritten survey where the respondents were asked to rate anindividual on a scale of 1 to 5, one group rated an individual a3.7, another group rated the individual a 4.3. Is the differencestatistically significant? ____

3.     A cateringcompany is buying equipment in order to set up their own store.They have a choice of two ovens that they can purchase for thestore. The used oven is $100 less than the new oven, but itsheating calibration is off by 20 degrees. Which one is a better buyfor them? ____

4.     Jim Smithowns three real estate offices in Anytown. He has decided to openone more office, but he cannot decide between Hometown or Uptown asthe town where he wants to locate. He will be comparing the meannumber of homes sold per real estate agent, and the mean commissionpercentage earned by agents in the two towns to make hisdecision. ____

5.     A study todetermine if job absenteeism is distributed evenly over theweek. ____

6.     Mel’sDiner has been surveying their customers for the past couple ofyears about their dining experience in the restaurant. The surveyuses a scale of one to five, five being best to indicate customersatisfaction. Mel’s customer satisfaction averaged 2.5 lastyear, but this year it is 2.9. Is this difference statisticallysignificant? ____

7.    Sally’s Beauty Salon just opened for business. Sally assignsthe stylists customers on a rotation basis so that everyone is keptbusy all day. One month after she opened the salon, Sally’scustomer count for each stylist was (a) 20 customers; (b) 30customers; (c) 15 customers; and (d) 25 customers. Has Sally beenfair in how she allocates customers to each of the stylists? ____

8.     Acomparison of salaries between male and female employees in thesame organization. ____

Explanation / Answer

1. Parametric test

2. Non - Parametric test

3. Parametric test

4. Parametric test

5. Non - Parametric test

6. Parametric test

7. Non - Parametric test

8. Parametric test

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