Articles: Blog

What is the difference between a measure and an indicator?

This question has become a perennial topic on many discussion forums.  measures, indicators, Performance indicators, Key performance indicators (KPIs).  In many organisations there is a very loose language that merges these separate phrases and words into a single thing.

I have seen organisations where every single measure on their scorecard is called a KPI.  Obviously silly as not all are key – some must be more important that others.  Some measure results, rather than performance.  Some are measures not simply indicators.

The problem is they are different.  Or rather there is much to be gained by recognising that they are different things and therefore opening up a greater clarity and usefulness in how these measures, indicators, Performance indicators, Key performance indicators (KPIs) and chosen, designed and used.  You can benefit from understanding distinctions between these ideas:  Improving how you think about how you measure and manage performance. How people talk about performance and the basis upon which they take  decisions.

How do we break through the fog of language

Lets us get to the heart of the problem.  Indicators and measures.  What is the difference?  In reality there is a large difference.  Measures and indicators are fundamentally different.

To answer that, let us step in with some plain English – forget the jargon…

- An indicator indicates something.

- A measure measures something.

So a carpenter wants to know that a table is 6 foot by 3 foot. That is a measure.  There is a standard foot out there and we can all agree how long it is.

A restaurant owner want to know that a table will seat six people. That is an indicator. It indicates it size, but does NOT measure it (by a universally agreed Metric or Imperial or Troy or any other system).

So a “performance indicator” indicates (not measures) performance. A “results indicator” indicates results. A “key performance indicator” is a “performance indicator” that is more important (key) than others.

This should not be made more complicated. I suggest it all starts here. Plain English rules, OK!

OK but which is the most useful?

I bet you did not expect that question did you?

To the carpenter, the standard measures 6ft x 2 ft is most useful.  Knowing it needs to seat six people does not help him order wood.

To the restaurant manager knowing you can get six people around a table is more useful – the specific measurements do not matter.Notu

Some measures are measured – some are  indicators

Notice an interesting twist in the last story.  To the restaurant manager the “measured” size of the table is less useful than the indicated size.  The size based on judgement.  The measured size is a poor measure of how many people the restaurant could seat at any one time.

This is important.  What is measureable, is not always useful.

Give me an example of indicators and measures

Let me gives a common place example. I am trying to use PLAIN English to illustrate the difference between measures and indicators. And emphasise the importance of utility (Usefulness)

a) I fill up my car with fuel. It is measures to 1 part in 10,000 and I pay accurately to 1 part in 10,000 ie 70 litres costs me £100.01 precisely (and there are clear standards for litres and money – in the UK anyway).  Accurate and useful for paying or calculating fuel consumption.

b) My fuel gauge is electronic, and is measuring the fuel remaining in a precise objective way. It is probably modelable in that someone knows all the parameters that went into it. But only gives me an INDICATION that is it a quarter full. A useful indication.  Useful and reasonably accurate, but an indicator.

c) My trip computer calculates instant fuel consumption. It is a measure (probably poor). It measures it. It is useful to adjust my driving. However I can’t influence it much.

d) My trip computer calculates miles travelled and fuel used to give me an objective average fuel consumption. An explicit measure.

e) My trip computer also calculates distance until empty. Very useful.  However that is only an indication of how far I might be able to travel assuming conditions going forward are similar. It is a good measure of what I have used.  It is an indication how far I might get. It has not measured the fuel consumption going forward. It does not know the terrain that I am heading for and how different it is. I do.  It is useful, and looks like a measure, but for my purposes it is ONLY an indicator.  An indication of how far I am likely to get.

All so far are Objectively measurable. For my practical purposes, some are measures (They are measurable – standard exists) – some measures provide an indication. All are useful.

f) I know I am heading for the parking lot that is the motorway around London on a busy Monday morning and my fuel consumption will drop dramatically in a traffic jam. I can use my judgement to estimate how far I will actually get. Or whether I will enjoy a pleasant morning on the side of the road waiting to be recovered.

Now I apply subjectivity and experience to work out whether to pull over now, or risk carrying on.  The measure/indicator is only so useful. It needs judgement to be really useful, to me, in this circumstance.

A restaurateur knowing a table is 6ft by 2 foot is not a very useful measure as it is only a indicator of how many people could sit around it.  The real question is how many people can I squeeze into the room and still serve and be comfortable?

Both measures and indicators can be useful. The question is how useful and to whom. All can be “objective”.

The essence of the difference between measures and indicators – what people forget

Let me get to the essence of that story: The difference in my mind between a measure and an indicator in the context of organisations and management.

An objective measure (exclude subjective for the moment) does not exist in isolation.

It must serve some person, some purpose.  This is really important and the missing piece of this discussion.

There are two questions:

  • Does it accurately assess (measure) what I am interested in? Accuracy.
  • Is it actually useful? Utility.

A formal measure does accurately assess the tangible qualities of interest – there is a standard out there (somewhere) and we can all agree what that standard is, inches, metres, pounds, litres, no of customers.

But the measure of that characteristic might not be useful.

An indicator suggests, gets close to, approximates, the qualities, but not to a necessarily agreed standard. (If dealing with children more could sit around the table).

But the indicator is still useful. It is a useful indicator to me running the restaurant. The measure (6×2) is not useful. The indicator is not helpful to the carpenter who needs to order wood.

So an important part of this discussion is not just accuracy but utility – usefulness. To a particular person (the carpenter or restaurateur). An indicator can be just as useful as “a measure” (measure here used in a much looser sense).

The problem in my mind is that in many organisations, both get called measures. Both get called indicators. But they are different in nature. They can both be useful in different circumstances. An indicator can be a useful proxy until a measure is ultimately developed. It can remain useful after the measure is available. Both answer the question “How do I know?”.

The lack of a distinction between an indicator and a measure clouds people’s minds. The distinction is actually useful as it opens up more options as to what is an acceptable way to assess something for somebody.

To answer the questions “How do I know?” and “How well is this known?”. Accuracy and utility.

(Note I am ignoring for the moment that in business we often find that our measures are not to a proven agreed standard and that a whole industry of data cleansing has emerged to solve this precise problem and to get to “one version of the truth”. That is a whole different discussion.).

Is there more?

Of course.

Remember you don’t always need “Measures” to make decisions.  I know my lawn needs cutting – I don’t need a ruler. I know my car needs washing – I don’t need a dirt measure.  I can make judgements and decisions without measures. The other day my wife asked me how long something was.  I said it is about 16 and a half inches.  She did not believe me so got a tape measure out.  I was out by a quarter of an inch.  Oh hum.  Good enough to know the length of the piece of wood she needed.  Far from precise enough for an aircraft component.  But for the purpose of our decision making, my judgement was good enough.  It was accurate enough and useful.

In other blogs you will find further clarification and the use of plain English to explain what we muddle up and obscure in our performance management language.  After all jargon should be between consenting adults in private.  As the language of performance management shows that is far from the case.

I provide training course on performance management through my company Excitant Ltd.  Courses that help organisations talk the same language and perform better.  Contact me for details.

 

 

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