SQL query that would return the average salary per department using AVG as aggregate function

Let's say we have a table tblTest as under

Name          		Salary          	Department

Debasis Dey     	15000          		IT Software
Sarbajit Das     	30000          		IT Hardware
Dipanjan Nagi     	25000          		IT Software

The expected output should be

Department          	Salary

IT Software          	20000
IT Hardware          	30000

Query
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Select Department, AVG(Salary) AS Salary
FROM tblTest
Group By Department
Order By Department DESC