Strange questions from a nitpicker ... ;p
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
Know your audience. Ask the user who will be looking at these values what they think they should see. The answers might surprise you. For example, I have an application where I don't display statistical data until a certain number of 'stable' samples have been seen. Stability is determined by a filter on the input data, which isn't useful while the process being measured is starting.
Software Zen:
delete this; -
I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
the question for more context is that it depends. so go back to the user and ask for more clerification what is useful to them or what is the end goal of said mesaurement. a number on it's own is meaningless Someone needs to know if value is within tolerance - so current value unless said tolerance is based on a time window and so would need to be able to clearly indicate what that time window is used over the mean
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
How often do values update? Once every 0.1 second? Once per second? Minute? Hour? Day? In the first two cases, display probably doesn't matter. If user has more than a few seconds of looking at the display, then it matters. (And how big is the display? "blank" you'd have space for, but I'm guessing not a "can't display value due to insufficient data" message would be too large.
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
I would really like to add to your confusion. You're talking about sample count = 1 etc, but you're talking of a continuous stream of samples, have you thought about what "average" means if you have had 94760434786353845 samples accumulated over 72 hours in a changing signal, would you *seriously* want to report the average of all that? My engineering self wants to suggest that you use a sliding average window of a fixed size, say, 10, but it could be anything reasonable considering the rate of change, and any noise that you would otherwise want to average out. Then, if you pick that number, say, N=10, then you can only start reporting after you've had at least 10 samples. And that would answer your original question.
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
Just wear green socks.
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
Blanks can be mistaken for a missed value. I suggest a "null". A quick and thorough guide to ‘null’: what it is, and how you should use it
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)
I'd say it is an exception case that yields "Insufficient Data". One measurement is a data point. You can't infer any unbiased statistics when n=1. There is no average, mean, or SD. If you're stuck having to show a number for some reason, that's an issue. I suppose you could treat it as a null, the same as having no data.
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I need to show some value for continous measurement(s): a.) Current Measurement Value b.) Mean Value of the measurements c.) Standard deviation of the measurements c.) In case there is no or only one measurement... From my point of view, I should not show any value here. Not even 0 b.) I have my doubts. The mean value is the current value. Or should I also show blank? a.) Is easy. As soon one has measured it is easy to show current valu Especally b.) drives me crazy Any suggestions/thoughts? Thank you very much in advance ;)