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Why do we measure? 15-Jan-2005. WB8RCR – 15 Jan 05Why do we MeasureSlide 2 Thou has ordered all things in measure, and number, and weight Wisdom 11:21.

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Presentation on theme: "Why do we measure? 15-Jan-2005. WB8RCR – 15 Jan 05Why do we MeasureSlide 2 Thou has ordered all things in measure, and number, and weight Wisdom 11:21."— Presentation transcript:

1 Why do we measure? 15-Jan-2005

2 WB8RCR – 15 Jan 05Why do we MeasureSlide 2 Thou has ordered all things in measure, and number, and weight Wisdom 11:21

3 WB8RCR – 15 Jan 05Why do we MeasureSlide 3 Definition Measuring is the act of assigning numbers to properties or characteristics Measuring is the act of assigning numbers to properties or characteristics (from Oak Ridge Associated Universities)

4 WB8RCR – 15 Jan 05Why do we MeasureSlide 4 What do we Measure? Step 1: Decide what we want to improve Step 1: Decide what we want to improve Often this is not as obvious as it sounds Often this is not as obvious as it sounds Consider the NTS … We are most interested in our preparedness to serve our agencies Consider the NTS … We are most interested in our preparedness to serve our agencies We don’t measure preparedness though.. We don’t measure preparedness though.. We measure QNI, QTC, hours, etc. We measure QNI, QTC, hours, etc.

5 WB8RCR – 15 Jan 05Why do we MeasureSlide 5 What do we Measure? Can we measure it directly? Can we measure it directly? Sometimes direct measures are feasible Sometimes direct measures are feasible Often what we want to achieve can be difficult or impossible to measure: Often what we want to achieve can be difficult or impossible to measure: Morale Morale Excitement Excitement Interest Interest In these cases, we may need some proxy In these cases, we may need some proxy

6 WB8RCR – 15 Jan 05Why do we MeasureSlide 6 Why do we Measure? We measure to: We measure to: Quantify a situation Quantify a situation Understand what affects things we see Understand what affects things we see Regulate Regulate Help understand and improve performance Help understand and improve performance Validate a hypothesis Validate a hypothesis

7 WB8RCR – 15 Jan 05Why do we MeasureSlide 7 Quantify a Situation If we are having trouble with a path that used to work, we might … If we are having trouble with a path that used to work, we might … Measure transmitted power Measure transmitted power Check SWR Check SWR Review solar numbers Review solar numbers Our objective is to understand the situation so we can understand our ability to affect it. Our objective is to understand the situation so we can understand our ability to affect it.

8 WB8RCR – 15 Jan 05Why do we MeasureSlide 8 Understand what affects things we see If our output power was low, we may look to SWR to see if foldback engaged If our output power was low, we may look to SWR to see if foldback engaged We may check emitted spectrum to be sure our capacity isn’t being eaten by spurs We may check emitted spectrum to be sure our capacity isn’t being eaten by spurs We may measure voltages in PA to understand if we have a problem there We may measure voltages in PA to understand if we have a problem there

9 WB8RCR – 15 Jan 05Why do we MeasureSlide 9 Regulate and Improve Every month our EC’s report drills and tests Every month our EC’s report drills and tests The act of measuring helps encourage the various counties to maintain some level of practice and training The act of measuring helps encourage the various counties to maintain some level of practice and training The results can help us understand opportunities for improvement The results can help us understand opportunities for improvement Still, a proxy for preparedness Still, a proxy for preparedness

10 WB8RCR – 15 Jan 05Why do we MeasureSlide 10 Validate a Hypothesis You have probably seen the following video but didn’t realize it was about measurement You have probably seen the following video but didn’t realize it was about measurement Want to validate a hypothesis but don’t have a direct measure Want to validate a hypothesis but don’t have a direct measure Analysis of the situation to identify a suitable proxy measure Analysis of the situation to identify a suitable proxy measure Engage expert to help identify appropriate proxy Engage expert to help identify appropriate proxy

11 WB8RCR – 15 Jan 05Why do we MeasureSlide 11

12 WB8RCR – 15 Jan 05Why do we MeasureSlide 12 Video Debrief Did you notice what the knight was doing when the villagers interrupted him? Did you notice what the knight was doing when the villagers interrupted him? The knight required data to validate the hypothesis The knight required data to validate the hypothesis No direct measure since the village apparently didn’t have a witch-o-meter No direct measure since the village apparently didn’t have a witch-o-meter What did you think of the chain of logic used to determine what to measure? What did you think of the chain of logic used to determine what to measure?

13 WB8RCR – 15 Jan 05Why do we MeasureSlide 13 Some Rules The more directly you can measure the better The more directly you can measure the better While we can’t always measure exactly what we want, the video gives some insight into the pitfalls While we can’t always measure exactly what we want, the video gives some insight into the pitfalls Just because you don’t have a direct measure, don’t give up. Often a reasonable proxy can be discovered Just because you don’t have a direct measure, don’t give up. Often a reasonable proxy can be discovered

14 WB8RCR – 15 Jan 05Why do we MeasureSlide 14 Some Rules (cont’d) Define exactly how to collect the data for the indicator and how to make the computation. Then make sure everyone understands Define exactly how to collect the data for the indicator and how to make the computation. Then make sure everyone understands This isn’t as easy as it sounds. Look at PSHR This isn’t as easy as it sounds. Look at PSHR

15 WB8RCR – 15 Jan 05Why do we MeasureSlide 15 Some Rules (cont’d) If you can’t flowchart the process you want to improve, a performance measure will offer little insight into what you should improve. If you can’t flowchart the process you want to improve, a performance measure will offer little insight into what you should improve. This is in line with understanding what you want to measure. This is in line with understanding what you want to measure. Sometimes we entirely miss the process Sometimes we entirely miss the process

16 WB8RCR – 15 Jan 05Why do we MeasureSlide 16 Causality Often, we want to understand relationships so we can understand causality Often, we want to understand relationships so we can understand causality The existence of a relationship does not prove cause and effect The existence of a relationship does not prove cause and effect There may be other factors not studied There may be other factors not studied

17 WB8RCR – 15 Jan 05Why do we MeasureSlide 17 You can’t improve what you don’t measure Robert F. Bruner

18 WB8RCR – 15 Jan 05Why do we MeasureSlide 18 Measure! Measure wisely Measure wisely Measure often Measure often Understand the limitations Understand the limitations Understand changes Understand changes


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