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Q: I am struggling with index numbers (Part 2)...

... basically when it comes to inflating, deflating changing the base year and weighted index numbers.

(This is Part 2 of the answer, continued from AT, March 2004, page 29. To see Part 1 click the link at the bottom of this page.)

Changing the base year

Transparency: the key ingredient in the food chain
Relations between farmers and supermarkets have been fraught. But both sides are working to improve things, says Cathy Hayward
Q: Can you tell me what Linear Regression is, please?
Linear Regression Analysis is a statistical method we use to find the equation for the trend line. The method is based on the assumption that the trend line is a straight line and therefore has the form y = a + bx (a linear equation) where: y = the sales level at a particular point in time
Supply Management Guide to Purchasing Cards - VAT issues
Tax relief VAT is a headache at the best of times, but the use of purchasing cards brings a new dimension to the issue. What does it mean for purchasers and suppliers?
Head to head - Should call centres be outsourced abroad?
Outsourcing to foreign call centres gives access to cheaper staff and so improves shareholder value, argues Alex Blues. But Ray Searles warns that the cost savings are a mirage
Supply Management Guide to Purchasing Cards - E-procurement
Can two become one? Are purchasing cards and e-procurement mutually exclusive, or can the two systems be joined together effectively? Opinions in the industry are divided
Supply Management Guide to Purchasing Cards - Implementation
Play your cards right When a purchasing card system is put into place there will inevitably be hurdles and teething problems - but these can be overcome if a company keeps staff involved in the process of change
Supply Management Guide to Purchasing Cards - Market overview

Growth potential Purchasing cards have been in the UK for a decade now. But although take-up has increased steadily, their market penetration remains relatively low, writes Peter Parry

Supply Management Guide to Purchasing Cards - The Business Case

Many happy returns With their low transaction and implementation costs, purchasing cards can bring fast return on investment, sometimes as rapidly as three months from roll-out.

Supply Management Guide to Purchasing Cards - The suppliers view
Positive thinking The short-term cost of accepting purchasing cards can appear prohibitive to suppliers, but many have found they can turn the inevitability of their use to great advantage
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