TABLE 17-7 A Supplier of Silicone Sheets for Producers of Computer Chips

question 79

Short Answer

TABLE 17-7
A supplier of silicone sheets for producers of computer chips wants to evaluate her manufacturing process. She takes samples of size 5 from each day's output and counts the number of blemishes on each silicone sheet. The results from 20 days of such evaluations are presented below.
-Referring to Table 17-7, an R chart is to be constructed for the number of blemishes. One way to create the upper control limit involves multiplying the mean of the sample ranges by D₄. For this data set, the value of D₄ is ________.

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Definitions:

Stock Market Indexes

Statistical measures that track the performance of a basket of selected stocks, representing a specific sector or market.

Asset Management Ratios

Financial metrics used to assess how efficiently a company manages its assets to generate revenue, including turnover ratios for inventory, receivables, and fixed assets.

Average Collection Period

The average number of days it takes for a company to receive payments owed by its customers for credit sales.

Inventory Turnover

A financial metric indicating how many times a company has sold and replaced its inventory over a specific period.