Does the OTR time appear to be stable, statistics homework help

User Generated

NEVAMR

Mathematics

Description

The data in below table lists country code and the order to remittance (OTR) time for hardware / software installations for the last 76 installations (from first to last). OTR is the time it takes from an order being placed until the system is installed and we receive payment (remittance). Because this company does business internationally, it also notes the country of installation using a country code. This code is listed in the first column.

Table: Country Code and OTR Cycle Time for Software Systems Installation Country Code	Cycle Time	Country Code	Cycle Time 1	20	5	29 1	24	6	40 1	46	7	157 1	26	8	19 14	38	5	24 1	15	1	81 1	15	7	53 17	23	7	26 1	31	1	28 1	31	1	34 6	64	1	34 5	29	7	50 5	44	1	52 1	32	1	19 1	15	1	44 7	11	14	150 7	14	7	29 1	89	17	23 17	41	6	79 7	41	17	13 1	36	6	32 8	43	7	61 17	21	8	42 8	28	8	46 7	18	7	88 8	47	14	24 6	26	7	7 6	47	1	33 5	9	5	129 7	42	17	41 5	5	17	43 6	27	14	42 6	27	14	42 1	33	7	53 7	44	7	53 1	21	7	48 1	22	5	21 1	50	1	19

Use the date in table above and answer the following questions in the space provided below:

  1. Does the OTR time appear to be stable? Why or why not?
  2. If you were to use a control chart to evaluate stability, which chart would you use? Why?
  3. What can you learn about the distribution of the installation process?
  4. Does it appear that the country has an impact on installation time? Why or why not?

User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Attached.

Running head. Order to remittance time

Order to remittance time

Name

Course

Institutional affiliation

1

Running head. Order to remittance time
1.

The OTR time appears to be unstable according to the chart above. The cycle times have
numerous time intervals as a whole and for specific country code. For instance, country code 1
has a variation of time cycle times with respect to time frames of 15 to 89. The difference
between the highest and the lowest cycle time of the countries is also indicative of the instability.
The lowest being at 5 and the highest at 157. The difference is too wide to attain stability.

2.

Considering the data above, the best control chart to represent the table would be a time
plot run chart. From a first glance, the time plot run chart enables one to clearly appreciate and
interpret data through rational and statistical analyses of the cycle time. The time plot run chat
also is useful in tracking information and predicting patterns or trends (Barham, 2007). The
method also identifies if a particular process has a repeating or special cause variation as in this
case. It also reveals ...


Anonymous
Awesome! Made my life easier.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Related Tags