question about weekly MA vs daily MA

C

cavalerox

Hello Everybody,

Here is my question;
In E-signal, I put the daily chart for SPY, I added 5,20,50 and 200 SMA's.
Then I switched the chart to weekly SPY, and I changed the SMA's from above to 1,4,10 and 40 SMA

When I compare the SMA's for weekly and daily charts, I should technically get the exact same results. (I even adjusted the size of the screen and made sure that the same amount of days are covered on both screens) But instead, I see a slight difference. Anybody has an opinion?
I am attaching the screen shot that will show both screens
Thank you everybody for your opinion.
-Baris
comparison between daily and weekly SMA.png
 
cavalerox said:
Hello Everybody,

Here is my question;
In E-signal, I put the daily chart for SPY, I added 5,20,50 and 200 SMA's.
Then I switched the chart to weekly SPY, and I changed the SMA's from above to 1,4,10 and 40 SMA

When I compare the SMA's for weekly and daily charts, I should technically get the exact same results. (I even adjusted the size of the screen and made sure that the same amount of days are covered on both screens) But instead, I see a slight difference. Anybody has an opinion?
I am attaching the screen shot that will show both screens
Thank you everybody for your opinion.
-Baris
View attachment 144938
More...
CA ;quote see a slight difference,unquote.I don't see enough of a difference to worry about, but I don't change a 50 dma to a 10 week moving average ; I use both, weekly helps me more. I enjoy the difference between sma + ema, but don't worry about stuff like some charts record from close to close. Other charts record from open to close.................................................................................................
 
You shouldn't 'technically' expect to get exact results by scaling, as you are using a different set of data points to construct each indicator (i.e. daily data on one, weekly another).
 
The problem is holidays. A trading week is typically five trading days, but it will be only four trading days if a holiday is present. So good luck with that day-to-week conversion math, thanks to the nightmares of holidays.
 
kut2k2 said:
The problem is holidays. A trading week is typically five trading days, but it will be only four trading days if a holiday is present. So good luck with that day-to-week conversion math, thanks to the nightmares of holidays.
More...
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Good points on a 4 day small sample.But 200 days seems to be more practical than 200 weeks.Not that years of data is not important.

I like IBD ''railroad tracks pattern'' for tops or bottom areas; but otherwise prefer candle charts or mountain charts.That last pattern is the same data, but completely different pictures.
 
Simple example:

Monday's close price: $100
Tuesday's close price: $101
Wednesday's close price: $102
Thursday's close price: $103
Friday's close price: $104

5-day average = (100 + 101 + 102 + 103 + 104) / 5 = $102

1-week average is based on the Friday's close price and = $104

There are no reasons at all 5-day MA should be the same as Friday's close price...
 
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