04.05.2014 Views

Strategy Survival Guide

Strategy Survival Guide

Strategy Survival Guide

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

5. Weight criteria and compare options<br />

The next step is to determine relative weightings for each criterion. This is in many ways the most difficult<br />

stage, and may be where public and stakeholder input is most crucial – different groups will have very<br />

different weightings. There are a number of approaches. One often-used approach is to divide a number of<br />

points (typically 100) between the criteria, in line with their perceived weighting relative to each other.<br />

Alternatively, a more qualitative approach may be used (e.g. "essential" versus "desirable" versus<br />

"irrelevant").<br />

Once weights have been assigned, they are used to adjust (quantitatively or qualitatively) the scores from<br />

stage 4, so that options can be compared. This should enable an explicit ranking of options to be carried out.<br />

6. Carry out sensitivity analysis and revisit conclusion<br />

The ranking emerging from stage 5 may well be sensitive to some relatively small variations in data, scoring<br />

or weighting. The presence of uncertainty makes it almost inevitable that the assumptions and judgements<br />

employed in the analysis are less than firm. Hence before any decisions are taken, it is essential that<br />

sensitivity analysis is carried out on each of these aspects of the analysis. The question to be addressed is:<br />

"Do the rankings stay the same when data, scoring and weighting is adjusted within reasonable bounds?".<br />

Strengths<br />

MCA can typically incorporate a wider range of criteria (e.g. social, environmental, ethical) than that<br />

employed in a typical financial analysis, and unlike a cost-benefit analysis, does not require monetisation of<br />

all costs and benefits. At the same time, it brings a systematic approach to appraising and comparing options<br />

with a wide range of quantifiable and non-quantifiable impacts, and is a more robust process than the implicit<br />

judgements that may otherwise be made.<br />

Weaknesses<br />

The main disadvantage is that – if carried out to its fullest extent – it can be a very time-consuming process.<br />

References<br />

HM Treasury’s Green Book<br />

Multi-Criteria Analysis – A Manual, appraisal guidance prepared for DETR by NERA, The Stationery Office<br />

(2000) ISBN 1 85112 454 3<br />

The Office of Government Commerce Policy to Successful Delivery site provides some useful guidance on<br />

appraising options<br />

<strong>Strategy</strong> <strong>Survival</strong> <strong>Guide</strong> – <strong>Strategy</strong> Skills<br />

Page 171

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!