In the first case you are prorating the impact into an expected impact. Multiplication of the maximum impact by the probability is the only way to do this as adding a percentage to a whole value (e.g. in dollars or weeks) wouldn't make sense.
In the second case as the scales for each stakeholder dimension are likely the same, you could also add them together but by multiplying them you get a larger range of values which might be usefùl if you had to plot the info on a chart.
Kiron Saving Changes...
Stéphane ParentSelf Employed / Semi-retired| Leader MakerPrince Edward Island, Canada
Usually, Mansour, you multiply values that are percentages or ratios.
For example, given two risks with the same potential impact, the one that is twice as likely to happen is considered twice as severe or twice as important. Adding the impact to the probability would not give you the same proportions. Saving Changes...
