EMA has a different internal value than the chart

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

  SCREENER[ close = 9.65] ( exponentialaverage[200](close) as "EMA 200" )

  1	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

  

  qigley

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

  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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  qigley

  

  robertogozzi

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

  Hi Roberto,

  I  tried the SMA, and now the values align.

  SCREENER[ close = 9.65] ( average[200](close) as "EMA 200" )

  1	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?

  

  qigley

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  03/28/2021 at 7:11 AM #165539
  robertogozzi

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

   

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  qigley

  

  robertogozzi

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

  Thats very worthwhile information. to know Thanks.

  

  qigley

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