# To estimate future values of the cost indices, one is tempted to assume that the average value

## Question:

To estimate future values of the cost indices, one is tempted to assume that the average value for the year occurred at midyear (June 30-July 1) and that the linear fit to the recent data can be extrapolated past the last data point. Based on Table 11-1, for which years is this procedure probably going to work fairly well, and for which years will it probably fail?

**Table 11-1**

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**Related Book For**

## Separation Process Engineering Includes Mass Transfer Analysis

**ISBN:** 9780137468041

5th Edition

**Authors:** Phillip Wankat