How to find average in Access? - ms-access

Question

I am trying out Access for the first time and I am trying to figure out how to really harness the amazing power of Access.
With that, I want to find the average quantity of each item but do not know how to do that. I set up 2 tables. One is the list of items (sand, water, etc.) then set up a relationship to another table that put out the quantities and price.
Below, Query 1 I set up and sorted it (I don't know why it isn't alphabetical even though I sorted ascending, but thats not why I'm here). So could someone help me try and figure out how to average each items amounts like in Query 2? Ultimately, I really just want the query to find the MaxAve and the MinAve and just show those 2 like in Query 3 below.
Query 1 Query 2 Query 3
fldName fldNum fldName fldAve fldName fldAve
Sand 4 Sand 4 Sand 4
Sand 4 Water 3.8 Computer 3.35
Water 3.7 Soda 3.43
Water 4 Computer 3.35
Water 3.7 Phone 3.43
Soda 3.7 Pencil 3.75
Soda 3.3
Soda 3.3
Computer 3.7
Computer 3
Phone 3
Phone 3.3
Phone 4
Pencil 4
Pencil 4
Pencil 3
Like I said I'm very new to Access and I am just trying things out. If you recommend setting up the query a different way Im open to anything really. The more I learn the better.

Answer 1

To get the average for each fieldname, just do this in a query:
SELECT FieldName, Avg(FieldNum) as AvgQty
FROM MyTable
GROUP BY FieldName
ORDER BY FieldName
This will also sort the fieldname column for you.
EDIT:
I think you can do what you asked for in your comment, but you will need a separate query based on the one above. You'll need a UNION query to do it. Something like:
SELECT Top 1 FieldName, AvgQty
FROM Query1
ORDER BY AvgQty ASC
UNION ALL
SELECT Top 1 FieldName, AvgQty
FROM Query1
ORDER BY AvgQty DESC
I'm doing that off the top of my head, so it may not be perfect.
As for formatting the field, do a google on "VBA Format Number" and you should be able to find some examples. I think it might make the above query look something like:
SELECT Top 1 FieldName, Format(AvgQty, "##.#") as AvgQty1
FROM Query1
ORDER BY AvgQty ASC
UNION ALL
SELECT Top 1 FieldName, Format(AvgQty, "##.#") as AvgQty1
FROM Query1
ORDER BY AvgQty DESC