Yielding the desired number of decimal places using the AVG function in t-sql

Hello again. Confused retired hobby coder having trouble setting up a scalar-valued function to return the desired number of decimal places from a AVG query.
Whenever I run the following script I get the number of decimals I desire:
Using the above I created a scalar-valued function as follows:
Running this function as: SELECT [dbo].[TestHCIPartial] (1,3) my return is -7.
Can you help me with the function causing it to yield the answer to 6 decimal places?
Thanks and regards, Minuend.

You've not specified precision and scale in UDF return type. So you're leaving it to server to interpret it based on default settings
If you want exactly up to four decimal places tweak udf as below
ALTER FUNCTION..
RETURNS decimal(20,4)
AS
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Please [don't cross-post!|http://stackoverflow.com/questions/2296110/determine-number-of-decimal-place-using-bigdecimal], it's considered rude. If you must do it, then at least link each post so that people can find out which answers you've already got in order to avoid duplicate work on our part.
Please read [_How To Ask Questions The Smart Way_|http://www.catb.org/~esr/faqs/smart-questions.html].

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Yielding the desired number of decimal places using the AVG function in t-sql

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