Price data

Economic Aspects. Terephthahc acid and dimethyl terephthalate are usually sold under long-term contracts. Pricing information is at times pubhshed but actual contract prices are not revealed. Price data pubhshed in 1992 were 0.60/kg for terephthahc acid and 0.57/kg for dimethyl terephthalate (42). The price is mainly influenced by the price of -xylene. The price of terephthahc acid is more than dimethyl terephthalate because a kilogram of it produces 17% more polyester. The price of dimethyl terephthalate takes this factor plus a credit for the methanol generated during polyester production into consideration. 

Means to capture pricing data from suppliers... 

For purposes of enforcing the law, FDA inspectors may at any time inspect any non-prescription or prescription drug. For both, FDA inspectors may see all records and documents except those that relate to financial data, sales data other than shipment data, pricing data, personnel data and research data. An FDA inspector may spend whatever amoimt of time is necessary to complete such an inspection - even weeks or months. Where significant enforcement issues have been found, FDA inspectors have been known to spend more than a year at a single establishment. 

The Veterans Administration pubhshes current contract prices on its Web site www.vapbm.org/PBM/prices.htm. The Veterans Administration honored my request to provide unpubhshed historical price data. 

This is not an exhaustive list, of course. Many other variables could be useful if the data available were sufficiently robust. For example, although UNODC gathers drug price data from countries around the world,... 

As with most collections of data, the price data correlated here exhibit a certain amount of scatter. This is due in part to the incomplete characterizations in terms of which the correlations are made, but also to variations among manufacturers, qualities of construction, design differences, market situations, and other factors. Accordingly, the accuracy of the correlations cannot be claimed to be better than 25% or so. 

Like most price series, power price data exhibit serial correlation. Hence, the error term et is characterized by a so-called 1(0) process (integrated of order zero).9... 

We note that both approaches fail to address an aspect that is typically present in commodity price data they are autocorrelated. If forward prices and C02 prices are not cointegrated, then error terms under both estimations might not converge. The typical response is to run an estimation using the first differences. This is typically a successful approach in the case of non-cointegrated AR(1) processes (but does not have the quick convergence properties that otherwise characterize estimations using levels). 

This suggests that, given the price formation, a first difference estimation using daily price data will bias the estimation of b significantly downward. One possible alternative approach would be to use monthly average prices, but then the number of observation points is reduced. 

Price data, August 24, 1987, Westvaco Corp., Charleston Heights, SC 29415-0848. 

You can easily spend weeks on the Internet looking for price data - don t do that. Set aside a limited amount of time, and use the guesses from the book if you have not found good data. 

To illustrate the price issues concerning other petrochemical feed stocks, the monthly average price data for the Singapore market is... 

Energy Information Administration of the US DoE (2004). Annual Energy Review 2002. Washington DC contains price data to 2003 and is supplemented by 2004 data from newscasts. 

The revenues and variable costs of production are obtained by multiplying the product, feed, or utility flow rates from the flowsheet by the appropriate prices. The difficult step is usually finding good price data. 

This section describes the most widely used sources of price data. Some pricing terminology is given in Table 6.8. 

Many companies can be hired as consultants to provide economic and marketing information, or allow access to such information on a subscription basis. The information provided generally includes market surveys and technical and economic analyses of competing technologies, as well as price data and forecasts. There is not room here to list all of these companies, but some of the most widely used are... 

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