Warranty Data Analysis Dates Format Example - Revision history

Lisa Hacker at 18:54, 18 September 2023

2023-09-18T18:54:29Z

← Older revision		Revision as of 18:54, 18 September 2023
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	<noinclude>{{Banner Weibull Examples}}		<noinclude>{{Banner Weibull Examples}}
	''This example appears in the [~~[Warranty_Data_Analysis\|~~Life ~~Data Analysis Reference book]~~]''.		''This example appears in the [https://help.reliasoft.com/reference/life_data_analysis Life data analysis reference]''.

	</noinclude>		</noinclude>

Kate Racaza: added link to W++ book

2012-08-16T06:24:31Z

added link to W++ book

← Older revision		Revision as of 06:24, 16 August 2012
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	<noinclude>{{Banner Weibull Examples}}</noinclude>		<noinclude>{{Banner Weibull Examples}}
			''This example appears in the [[Warranty_Data_Analysis\|Life Data Analysis Reference book]]''.

			</noinclude>
	'''Dates of Failure Warranty Analysis'''		'''Dates of Failure Warranty Analysis'''

Richard House at 07:52, 7 August 2012

2012-08-07T07:52:38Z

← Older revision		Revision as of 07:52, 7 August 2012
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	Assume that a company has the following information for a product.		Assume that a company has the following information for a product.

			{\| \| border="1" align="center" style="border-collapse: collapse;" cellpadding="5" cellspacing="5"
	{\| \| border="1" ~~class~~="~~wikitable~~" style="~~margin~~: ~~1em auto 1em auto~~"
	\|+ '''Sales'''		\|+ '''Sales'''
	\|-		\|-
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	{\| \| border="1" ~~class~~="~~wikitable~~" style="~~margin~~: ~~1em auto 1em auto~~"		{\| \| border="1" align="center" style="border-collapse: collapse;" cellpadding="5" cellspacing="5"
	\|+ '''Returns'''		\|+ '''Returns'''
	\|-		\|-
Line 98:		Line 97:


	{\| \| border="1" ~~class~~="~~wikitable~~" style="~~margin~~: ~~1em auto 1em auto~~"		{\| \| border="1" align="center" style="border-collapse: collapse;" cellpadding="5" cellspacing="5"
	\| align="center" style="background:#f0f0f0;"\|'''Quantity In-Service'''		\| align="center" style="background:#f0f0f0;"\|'''Quantity In-Service'''
	\| align="center" style="background:#f0f0f0;"\|'''Date In-Service'''		\| align="center" style="background:#f0f0f0;"\|'''Date In-Service'''

Richard House at 07:15, 6 August 2012

2012-08-06T07:15:47Z

← Older revision		Revision as of 07:15, 6 August 2012
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	\|}		\|}


	Using the given information to estimate the failure distribution of the product and forecast warranty returns.		Using the given information to estimate the failure distribution of the product and forecast warranty returns.


	'''Solution'''		'''Solution'''

	Create a warranty analysis folio using the dates of failure format. Enter the data from the tables in the '''Sales''', '''Returns''' and '''Future Sales''' sheets. On the control panel, click the '''Auto-Set''' button to automatically set the end date to the last day the warranty data were collected (September 14, 2011). Analyze the data using the 2P-Weibull distribution and RRX analysis method. The parameters are estimated to be beta = 1.315379 and eta = 102,381.486165.		Create a warranty analysis folio using the dates of failure format. Enter the data from the tables in the '''Sales''', '''Returns''' and '''Future Sales''' sheets. On the control panel, click the '''Auto-Set''' button to automatically set the end date to the last day the warranty data were collected (September 14, 2011). Analyze the data using the 2P-Weibull distribution and RRX analysis method. The parameters are estimated to be beta = 1.315379 and eta = 102,381.486165.


	The warranty folio automatically converts the warranty data into a format that can be used in a Weibull++ standard folio. To see this result, click anywhere within the '''Analysis Summary''' area of the control panel to open a report, as shown next (showing only the first 35 rows of data). In this example, rows 23 to 60 show the time-to-failure data that resulted from the conversion.		The warranty folio automatically converts the warranty data into a format that can be used in a Weibull++ standard folio. To see this result, click anywhere within the '''Analysis Summary''' area of the control panel to open a report, as shown next (showing only the first 35 rows of data). In this example, rows 23 to 60 show the time-to-failure data that resulted from the conversion.

			[[image:Warranty Dates Format Summary.png\|center\|500px]]
	[[image:Warranty Dates Format Summary.png~~\|thumb~~\|center\|500px]]


	To generate a forecast, click the '''Forecast''' icon on the control panel. In the Forecast Setup window, set the forecast to start on '''September 2011''' and set the number of forecast periods to '''6'''. Set the increment (length of each period) to '''1 Month''', as shown next.		To generate a forecast, click the '''Forecast''' icon on the control panel. In the Forecast Setup window, set the forecast to start on '''September 2011''' and set the number of forecast periods to '''6'''. Set the increment (length of each period) to '''1 Month''', as shown next.

			[[image:Warranty Dates Format Forecast Window.png\|center\|400px]]
	[[image:Warranty Dates Format Forecast Window.png~~\|thumb~~\|center\|400px]]


	Click '''OK'''. A Forecast sheet will be created, with the predicted future returns. Note that the first forecast will start on September 15, 2011 because the end of observation period was set to September 14, 2011.		Click '''OK'''. A Forecast sheet will be created, with the predicted future returns. Note that the first forecast will start on September 15, 2011 because the end of observation period was set to September 14, 2011.


	Click the '''Plot''' icon and choose the '''Expected Failures''' plot. The plot displays the predicted number of returns for each month, as shown next.		Click the '''Plot''' icon and choose the '''Expected Failures''' plot. The plot displays the predicted number of returns for each month, as shown next.

			[[image:Warranty Dates Format Predicted Failures Plot.png\|center\|600px]]
	[[image:Warranty Dates Format Predicted Failures Plot.png~~\|thumb~~\|center\|600px]]

Richard House at 07:45, 3 August 2012

2012-08-03T07:45:46Z

← Older revision		Revision as of 07:45, 3 August 2012
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	[[image:Warranty Dates Format Summary.png\|thumb\|center\|~~400px~~]]		[[image:Warranty Dates Format Summary.png\|thumb\|center\|500px]]


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	[[image:Warranty Dates Format Predicted Failures Plot.png\|thumb\|center\|~~500px~~]]		[[image:Warranty Dates Format Predicted Failures Plot.png\|thumb\|center\|600px]]

Kate Racaza: updated example

2012-07-24T10:10:56Z

updated example

← Older revision		Revision as of 10:10, 24 July 2012
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	{~~\| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;"~~		<noinclude>{{Banner Weibull Examples}}</noinclude>
	\|-		'''Dates of Failure Warranty Analysis'''
	~~\| valign="middle" align="left" bgcolor=EEEDF7\|[[Image:~~ Weibull-Examples~~-banner.png\|400px\|center]]~~
	\|}		Assume that a company has the following information for a product.
	<br>
	Assume a company has the following information for a product.

	~~'''Sales'''~~
	{\| \| border="1" class="wikitable" style="margin: 1em auto 1em auto"		{\| \| border="1" class="wikitable" style="margin: 1em auto 1em auto"
			\|+ '''Sales'''
			\|-
	\| align="center" style="background:#f0f0f0;"\|'''Quantity In-Service'''		\| align="center" style="background:#f0f0f0;"\|'''Quantity In-Service'''
	\| align="center" style="background:#f0f0f0;"\|'''Date In-Service'''		\| align="center" style="background:#f0f0f0;"\|'''Date In-Service'''
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	~~'''Returns'''~~
	{\| \| border="1" class="wikitable" style="margin: 1em auto 1em auto"		{\| \| border="1" class="wikitable" style="margin: 1em auto 1em auto"
			\|+ '''Returns'''
			\|-
	\| align="center" style="background:#f0f0f0;"\|'''Quantity Returned'''		\| align="center" style="background:#f0f0f0;"\|'''Quantity Returned'''
	\| align="center" style="background:#f0f0f0;"\|'''Date of Return'''		\| align="center" style="background:#f0f0f0;"\|'''Date of Return'''
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	~~'''Future Sales'''~~
	{\| \| border="1" class="wikitable" style="margin: 1em auto 1em auto"		{\| \| border="1" class="wikitable" style="margin: 1em auto 1em auto"
	\| align="center" style="background:#f0f0f0;"\|'''Quantity In-Service'''		\| align="center" style="background:#f0f0f0;"\|'''Quantity In-Service'''
	\| align="center" style="background:#f0f0f0;"\|'''Date In-Service'''		\| align="center" style="background:#f0f0f0;"\|'''Date In-Service'''
			\|+ '''Future Sales'''
	\|-		\|-
	\| 5000\|\|9/1/2011		\| 5000\|\|9/1/2011
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	Using the ~~above~~ information~~, we want~~ to estimate the failure distribution of ~~this~~ product and forecast warranty returns.		Using the given information to estimate the failure distribution of the product and forecast warranty returns.


	'''Solution'''		'''Solution'''

	'''~~Step 1:~~''' ~~The~~ data ~~can be entered into a warranty folio with~~ the ~~dates~~-~~of-failure format~~, ~~as shown in the figures below~~.		Create a warranty analysis folio using the dates of failure format. Enter the data from the tables in the '''Sales''', '''Returns''' and '''Future Sales''' sheets. On the control panel, click the '''Auto-Set''' button to automatically set the end date to the last day the warranty data were collected (September 14, 2011). Analyze the data using the 2P-Weibull distribution and RRX analysis method. The parameters are estimated to be beta = 1.315379 and eta = 102,381.486165.

	~~[[image:Warranty Dates Format Sales.png\|thumb\|center\|400px]]~~

	~~[[image:Warranty Dates Format Returns~~.~~png\|thumb\|center\|400px]]~~		The warranty folio automatically converts the warranty data into a format that can be used in a Weibull++ standard folio. To see this result, click anywhere within the '''Analysis Summary''' area of the control panel to open a report, as shown next (showing only the first 35 rows of data). In this example, rows 23 to 60 show the time-to-failure data that resulted from the conversion.

	~~[[image:Warranty Dates Format Future Sales.png\|thumb\|center\|400px]]~~

			[[image:Warranty Dates Format Summary.png\|thumb\|center\|400px]]

	~~'''Step 2:''' Set the calculation setting as shown next:~~

	~~[[image:Warranty Dates Format Calculation Settings~~.~~png\|thumb\|center\|400px]]~~		To generate a forecast, click the '''Forecast''' icon on the control panel. In the Forecast Setup window, set the forecast to start on '''September 2011''' and set the number of forecast periods to '''6'''. Set the increment (length of each period) to '''1 Month''', as shown next.


	~~Make sure the End of Observation Period is 8/14/2011.~~		[[image:Warranty Dates Format Forecast Window.png\|thumb\|center\|400px]]

	~~'''Step 3~~:''' After you click the '''Calculate''' Button, you will get the results shown in the '''Analysis Summary''' area in the above figure. You can also click anywhere inside the '''Analysis Summary''' area to view more results.

	~~[[image:Warranty Dates Format Summary.png\|thumb\|center\|400px]]~~

	~~In the bottom part of the above figure, you can see the warranty data is converted to a format that can be used in a Weibull++ standard folio.~~		Click '''OK'''. A Forecast sheet will be created, with the predicted future returns. Note that the first forecast will start on September 15, 2011 because the end of observation period was set to September 14, 2011.

	~~'''Step 4:'''~~ Click ~~on the~~ '''~~Forecast~~''' ~~button [[image: Warranty Dates Format~~ Forecast ~~button~~.~~png]] to get~~ the ~~following~~ forecast ~~window~~.

	~~[[image:Warranty Dates Format Forecast Window.png\|thumb\|center\|400px]]~~

	~~Click '''OK''' to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.~~

	~~'''Step 5:'''~~ Click the '''Plot''' icon and choose the Expected Failures plot. The predicted number of returns for each month ~~was plotted~~.		Click the '''Plot''' icon and choose the '''Expected Failures''' plot. The plot displays the predicted number of returns for each month, as shown next.

	~~[[image:Warranty Dates Format Predicted Failures Plot.png\|thumb\|center\|400px]]~~

	~~The remaining plots in the '''~~Plot ~~Type''' drop-down list are the same plots in the Webull++ standard folio~~.		[[image:Warranty Dates Format Predicted Failures Plot.png\|thumb\|center\|500px]]

Chris Kahn at 23:39, 3 May 2012

2012-05-03T23:39:39Z

← Older revision		Revision as of 23:39, 3 May 2012
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	'''Solution'''		'''Solution'''

	'''Step 1:''' The data can be entered into a ~~Warranty~~ folio with ~~Dates Format. They are given~~ in the figures below.		'''Step 1:''' The data can be entered into a warranty folio with the dates-of-failure format, as shown in the figures below.

	[[image:Warranty Dates Format Sales.png\|thumb\|center\|400px]]		[[image:Warranty Dates Format Sales.png\|thumb\|center\|400px]]
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	'''Step 2:''' Set the calculation setting as:		'''Step 2:''' Set the calculation setting as shown next:

	[[image:Warranty Dates Format Calculation Settings.png\|thumb\|center\|400px]]		[[image:Warranty Dates Format Calculation Settings.png\|thumb\|center\|400px]]

	~~Please make~~ sure the End of Observation Period ~~to be~~ 8/14/2011.		Make sure the End of Observation Period is 8/14/2011.

	'''Step 3:''' ~~Click on~~ '''Calculate''' Button, you get the results shown in the '''Analysis Summary''' in the above figure. You also click on the '''Analysis Summary''' to view more results.		'''Step 3:''' After you click the '''Calculate''' Button, you will get the results shown in the '''Analysis Summary''' area in the above figure. You can also click anywhere inside the '''Analysis Summary''' area to view more results.

	[[image:Warranty Dates Format Summary.png\|thumb\|center\|400px]]		[[image:Warranty Dates Format Summary.png\|thumb\|center\|400px]]

	In the bottom part of the above figure, you can see the warranty data is converted to ~~data~~ format that can be used in ~~standard~~ Weibull++ folio.		In the bottom part of the above figure, you can see the warranty data is converted to a format that can be used in a Weibull++ standard folio.

	'''Step 4:''' Click on the '''Forecast''' button [[image: Warranty Dates Format Forecast button.png]] to get the following forecast window.		'''Step 4:''' Click on the '''Forecast''' button [[image: Warranty Dates Format Forecast button.png]] to get the following forecast window.
Line 144:		Line 144:
	[[image:Warranty Dates Format Forecast Window.png\|thumb\|center\|400px]]		[[image:Warranty Dates Format Forecast Window.png\|thumb\|center\|400px]]

	Click on OK to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.		Click '''OK''' to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.

	'''Step 5:''' Click on the '''~~plot~~''' ~~button,~~ and choose the ~~'''~~Expected Failures plot~~'''~~. The predicted number of returns for each month was plotted.		'''Step 5:''' Click the '''Plot''' icon and choose the Expected Failures plot. The predicted number of returns for each month was plotted.

	[[image:Warranty Dates Format Predicted Failures Plot.png\|thumb\|center\|400px]]		[[image:Warranty Dates Format Predicted Failures Plot.png\|thumb\|center\|400px]]

	The ~~rest~~ plots in the ~~plot type~~ drop down list are the same plots as in Webull++ standard folio.		The remaining plots in the '''Plot Type''' drop-down list are the same plots in the Webull++ standard folio.

Nikki Helms: Created page with '{| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;" |- | valign="middle" align="left" bgcolor=EEEDF7|[[Image: Weibull-…'

2012-03-23T16:09:28Z

Created page with '{| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;" |- | valign="middle" align="left" bgcolor=EEEDF7|[[Image: Weibull-…'

New page

{| class="FCK__ShowTableBorders" border="0" cellspacing="0" cellpadding="0" align="center"; style="width:100%;"
|-
| valign="middle" align="left" bgcolor=EEEDF7|[[Image: Weibull-Examples-banner.png|400px|center]]
|}
<br>
Assume a company has the following information for a product.

'''Sales'''
{| | border="1" class="wikitable" style="margin: 1em auto 1em auto"
| align="center" style="background:#f0f0f0;"|'''Quantity In-Service'''
| align="center" style="background:#f0f0f0;"|'''Date In-Service'''
|-
| 6316||1/1/2010
|-
| 8447||2/1/2010
|-
| 5892||3/1/2010
|-
| 596||4/1/2010
|-
| 996||5/1/2010
|-
| 8977||6/1/2010
|-
| 2578||7/1/2010
|-
| 8318||8/1/2010
|-
| 2667||9/1/2010
|-
| 7452||10/1/2010
|-
| 1533||11/1/2010
|-
| 9393||12/1/2010
|-
| 1966||1/1/2011
|-
| 8960||2/1/2011
|-
| 6341||3/1/2011
|-
| 4005||4/1/2011
|-
| 3784||5/1/2011
|-
| 5426||6/1/2011
|-
| 4958||7/1/2011
|-
| 6981||8/1/2011
|}

'''Returns'''
{| | border="1" class="wikitable" style="margin: 1em auto 1em auto"
| align="center" style="background:#f0f0f0;"|'''Quantity Returned'''
| align="center" style="background:#f0f0f0;"|'''Date of Return'''
| align="center" style="background:#f0f0f0;"|'''Date In-Service'''
|-
| 2||10/29/2010||10/1/2010
|-
| 1||11/13/2010||10/1/2010
|-
| 2||3/15/2011||10/1/2010
|-
| 5||4/10/2011||10/1/2010
|-
| 1||11/13/2010||11/1/2010
|-
| 2||2/19/2011||11/1/2010
|-
| 1||3/11/2011||11/1/2010
|-
| 2||5/18/2011||11/1/2010
|-
| 1||1/9/2011||12/1/2010
|-
| 2||2/13/2011||12/1/2010
|-
| 1||3/2/2011||12/1/2010
|-
| 1||6/7/2011||12/1/2010
|-
| 1||4/28/2011||1/1/2011
|-
| 2||6/15/2011||1/1/2011
|-
| 3||7/15/2011||1/1/2011
|-
| 1||8/10/2011||2/1/2011
|-
| 1||8/12/2011||2/1/2011
|-
| 1||8/14/2011||2/1/2011
|}

'''Future Sales'''
{| | border="1" class="wikitable" style="margin: 1em auto 1em auto"
| align="center" style="background:#f0f0f0;"|'''Quantity In-Service'''
| align="center" style="background:#f0f0f0;"|'''Date In-Service'''
|-
| 5000||9/1/2011
|-
| 5000||10/1/2011
|-
| 5000||11/1/2011
|-
| 5000||12/1/2011
|-
| 5000||1/1/2012

|}

Using the above information, we want to estimate the failure distribution of this product and forecast warranty returns.

'''Solution'''

'''Step 1:''' The data can be entered into a Warranty folio with Dates Format. They are given in the figures below.

[[image:Warranty Dates Format Sales.png|thumb|center|400px]]

[[image:Warranty Dates Format Returns.png|thumb|center|400px]]

[[image:Warranty Dates Format Future Sales.png|thumb|center|400px]]

'''Step 2:''' Set the calculation setting as:

[[image:Warranty Dates Format Calculation Settings.png|thumb|center|400px]]

Please make sure the End of Observation Period to be 8/14/2011.

'''Step 3:''' Click on '''Calculate''' Button, you get the results shown in the '''Analysis Summary''' in the above figure. You also click on the '''Analysis Summary''' to view more results.

[[image:Warranty Dates Format Summary.png|thumb|center|400px]]

In the bottom part of the above figure, you can see the warranty data is converted to data format that can be used in standard Weibull++ folio.

'''Step 4:''' Click on the '''Forecast''' button [[image: Warranty Dates Format Forecast button.png]] to get the following forecast window.

[[image:Warranty Dates Format Forecast Window.png|thumb|center|400px]]

Click on OK to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.

'''Step 5:''' Click on the '''plot''' button, and choose the '''Expected Failures plot'''. The predicted number of returns for each month was plotted.

[[image:Warranty Dates Format Predicted Failures Plot.png|thumb|center|400px]]

The rest plots in the plot type drop down list are the same plots as in Webull++ standard folio.