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Folks,
This might be old or of little interest, but has anyone had trouble
getting the Beta custom indicator on the MS site to work under MS 8?
No matter what I do the indicator always returns 1.
In case anyone doesn't have the code as MS publishes handy, here it is:
## ---------------------------------
{This formula calculates Beta which is a measure of volatility of one
security against another. This is typically used to measure the
volatility of a stock against an index like the S&P 500. A value
greater than one indicates the stock is more volatile than the index.
To plot Beta:
1. Open a chart of the desired security.
2. Drag the price plot of the index your are comparing, into the chart
of the security.
3. Drag this custom indicator from the QuickList and drop it onto the
price plot of the index.
Note, this formula is set to calculate beta over 21 periods. To
change the time periods replace each instance of 21 in the formula
with the desired number of periods.}
(( 21 * Sum( ROC( CLOSE,1,%) * ROC( INDICATOR,1,%),21))-
( Sum( ROC( CLOSE,1,%),21) * Sum( ROC( INDICATOR,1,%), 21)))
/
(( 21 * Sum( Pwr( ROC( INDICATOR,1,%),2),21)) -
Pwr( Sum( ROC( INDICATOR,1,%),21),2))
## -------------------------
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