Excel functions
http://office.microsoft.com/en-us/excel-help/CH010064502.aspx
http://office.microsoft.com/en-us/excel-help/list-of-excel-functions-alphabetical-HA010277524.aspx
http://office.microsoft.com/en-us/excel-help/list-of-excel-functions-by-category-HP010079186.aspx
http://www.baycongroup.com/excel2007/03_excel.htm
Functions are prewritten formulas.
For example, you can use the SUM function to add. When using a function, remember the following:
 Use an equal sign to begin a formula.
 Specify the function name.
 Enclose arguments within parentheses. Arguments are values on which you want to perform the
calculation. For example, arguments specify the numbers or cells you want to add.
 Use a comma (,) to separate arguments. ( And not semicolon (;) )
Here is an example of a function:
=SUM(2,13,A1,B2:C7)
In this function:





The equal sign begins the function.
SUM is the name of the function.
2, 13, A1, and B2:C7 are the arguments.
Parentheses enclose the arguments.
Commas separate the arguments.
Using functions:
a, You can write simply a function to a cell.
e.g. =SUM(B5:D8)
b, You can use the fx ( Insert function) button => Select a category (e.g. All ) =>
Select the function (e.g. SUM ) => OK => You can see help about this function on the box =>
You can write the function arguments in this box =>
Click Help on this function, if you need more help. Here you can find a detailed description
about that function, with examples.
c, You can use the Sum ( ∑ ) button for simple functions ( SUM, AVERAGE, COUNT, MAX, MIN)
d, You can use the Formulas tab => Function Library
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We will not discuss the functions one by one. You discussed them in secondary school.
We will use them in exercises.
You will have to know and use the next functions in exercises:
SUM, MAX, MIN, AVERAGE
COUNT, COUNTA, ABS, PRODUCT
SUMIF: conditional SUM
COUNTIF: Conditional COUNT
AVERAGEIF: Conditional AVERAGE
IF, OR, AND
ROUND, FLOOR, ROUNDDOWN, ROUNDUP, MOD
MATCH, INDEX, VLOOKUP, HLOOKUP,
YEAR, MONTH, DAY, HOUR, MINUTE, SECONT, NOW
RANK, POWER, ROW, COLUMN, SQRT
Database functions:
DSUM: Conditional SUM
DAVERAGE: Conditional AVERAGE
DMAX: Conditional MAX
DMIN: Conditional MIN
DCOUNT: Conditional COUNT
DCOUNTA: Conditional COUNT
DPRODUCT: Conditional PRODUCT
DGET,
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