Articles tagged Nevada charts

A way to organize field return data that captures the time-to-failure and censored data. A Nevada charts uses sales and returns and organizes the count of returns by which month or week of sales it originated and when the return was reported or arrived. This convenient ongoing chart enables one to tally returns as they arrive while preserving the necessary information for analysis.

by Hemant Urdhwareshe Leave a Comment

Warranty Data Analysis on Minitab

I am happy to share my next video on ‘Warranty Data Analysis using Minitab Software’. The video explains the popular Nevada format of warranty data collection and how to convert it in to suitable tabular format so that the same can be analysed using Minitab or other software. In this video, we explain the various types of failure data when Nevada format is used. In some of our previous videos, we have already discussed various types of life data i.e. complete, right censored, left censored and interval censored. When all these types of data are present at the same time, we call such data as multiply censored. Such type of data can be analysed on Minitab using the commands for arbitrarily censored data.

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by Fred Schenkelberg 10 Comments

Nevada Charts to Gather Data

A common and poor technique to gather field data is to count the number of returns by week or month. This can provide a graph showing the number of returns over time.

It hides information you need to understand your field failures.

Let’s take a look at a way to gather the same field failure data and retain the critical information necessary for time to failure analysis. [Read more…]