EMA has a different internal value than the chart

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03/28/2021 at 12:29 AM #165522 quote
qigley
Participant

Junior
```
SCREENER[ close = 9.65] ( exponentialaverage[200](close) as "EMA 200" )
```
Hi All,

Executing the above screener, why does the chart display a different value for the EMA 200 than what Proscreener returns in its results list?

Chart says 9.4383, Procscreener result says 9.111 .

Thanks

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03/28/2021 at 1:27 AM #165529 quote

robertogozzi
Moderator

Master

ProScreener has a 254-bar limit.

Exponential averages need more than the bars within brackets to calculate correctly. Use less period (maybe 100 or even less periods), or, even better, use a Simple Moving Average.

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03/28/2021 at 5:17 AM #165531 quote
qigley
Participant

Junior
Hi Roberto,

I tried the SMA, and now the values align.
```
SCREENER[ close = 9.65] ( average[200](close) as "EMA 200" )
```
However I dont quite understand your answer when you say “Exponential averages need more than the bars within brackets to calculate correctly.” can you elaborate?

qbe2.jpg qbe3.jpg
03/28/2021 at 7:11 AM #165539 quote

robertogozzi
Moderator

Master

The formula to calculate the exponential average for N periods requires about twice that number of bars.

qigley thanked this post

38857713-00CF-497D-B0EE-29917835BE5C.jpeg

03/28/2021 at 10:40 AM #165548 quote

qigley
Participant

Junior

Thats very worthwhile information. to know Thanks.
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EMA has a different internal value than the chart

ProScreener: Market Scanners & Detection

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qigley @qigley Participant

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This topic contains 4 replies,
has 2 voices, and was last updated by qigley
4 years, 11 months ago.

Topic Details

Forum:	ProScreener: Market Scanners & Detection
Language:	English
Started:	03/28/2021
Status:	Active
Attachments:	4 files

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