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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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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 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'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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For zero. Don't show anything. So don't even show the text.
Either for a report or a dashboard instead of those values display "No measurements"
For one, the calculated values still work. Presumably you also display a count of values.
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...One person can change the world[^]
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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I prefer this one[^]
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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"Dripping water hollows out stone, not through force, but through persistence." - Ovid, Roman poet
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Quote: Manjhi started off his extraordinary task in 1960, after his wife was injured while trekking up the side of one of the rocky footpaths. To reach the nearest hospital, he had to travel around the mountains, some 70 kilometers.
This is the very definition of what we do. Someone has an issue and we try to create a solution to fix it. So long as there are not too many stakeholders, committees, accountants, etc...
Graeme
"I fear not the man who has practiced ten thousand kicks one time, but I fear the man that has practiced one kick ten thousand times!" - Bruce Lee
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Now I know where Stephen King got the idea for Rita Hayworth and the Shawshank Redemption.
I’ve given up trying to be calm. However, I am open to feeling slightly less agitated.
I’m begging you for the benefit of everyone, don’t be STUPID.
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... you're a really crappy Secret Santa.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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You spelt carpy rong.
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If you give me a fresh 5 kg wild salmon, I'll be happy.
Religious freedom is the freedom to say that two plus two make five.
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Your cat is sending messages again.
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In America it's spelled Crappie[^]
I’ve given up trying to be calm. However, I am open to feeling slightly less agitated.
I’m begging you for the benefit of everyone, don’t be STUPID.
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Wordle 959 3/6
⬛⬛🟨⬛⬛
🟨🟨🟨⬛⬛
🟩🟩🟩🟩🟩
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Wordle 959 5/6
⬜⬜🟨⬜⬜
⬜🟨⬜🟨⬜
⬜🟩⬜⬜🟩
⬜🟩⬜⬜🟩
🟩🟩🟩🟩🟩
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🟨🟨⬜⬜⬜
⬜🟩🟨⬜⬜
🟩🟩🟩🟩🟩
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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Wordle 959 3/6*
⬜🟨🟨⬜⬜
🟨🟨⬜🟩⬜
🟩🟩🟩🟩🟩
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Wordle 959 4/6
⬛⬛🟨⬛⬛
⬛🟨⬛🟩⬛
⬛⬛🟨🟩🟩
🟩🟩🟩🟩🟩
Ok, I have had my coffee, so you can all come out now!
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Wordle 959 4/6*
⬛⬛🟨⬛⬛
🟨⬛🟨🟨🟨
⬛🟨🟨🟨🟨
🟩🟩🟩🟩🟩
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I heard that the Vegans originally were a tribe of indians who lived near today's west coast of the US. Their name meant something like 'terrible hunters'.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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