1. About Functions SUM, AVERAGE, MIN, MAX, COUNT, ROUND

2. WHAT IS AN EXCEL FUNCTION?
A pre-defined formula used in a calculation
Excel has over 300 functions – business, scientific & engineering
Functions Today:
SUM
MIN, MAX
AVERAGE
COUNT
ROUND

3. Some things you need to know. . .
Argument: A value
Range: Two or more cells on a sheet. The cells in a range can be adjacent or nonadjacent
Cell reference: The set of coordinates that a cell occupies
Constant: A value that is not calculated
E.g., the number 210 and the text "Quarterly Earnings”
Formula: A sequence of values, cell references, names, functions, or operators in a cell that together produce a new value
=SUM(A1:A5) adds all the numbers that are contained in cells A1 through A5.
=SUM(A1, A3, A5) adds the numbers that are contained in cells A1, A3, and A5.
A value that provides information to an action, an event, a method, a property, a function, or a procedure.
A formula always begins with an equal sign

4. SUM
Description
The SUM function adds all the numbers that you specify as arguments. Each argument can be numbers or cell references.
Syntax
=SUM(number1, [number2], [number3], [number4], ...)

5. AVERAGE
Description
Returns the average of the arguments. For example, if the range A1:A20 contains numbers, the formula =AVERAGE(A1:A20) returns the average of those numbers.
Syntax
=AVERAGE(number1, [number2],...)

6. MAX AND MIN Description
MAX function to find the maximum number in a selected range.
MIN function to find the minimum number in a selected range.
Syntax
=MIN(A2:A7) Smallest number in the range (0)
=MAX(A2:A7) Largest number in the range (27)
Use the drop down arrow next to the AutoSum button
Select Max or Min from the list
Ensure the cell range is correct
Press Enter

7. COUNT
Description
The COUNT function counts the number of cells that contain numbers within a range.
Syntax
=COUNT([value1], [value2],...)

8. COUNTA
Description
The COUNTA function counts the number of cells in a range that are not empty.
Syntax
=COUNTA([value1], [value2],...)

9. ROUND
Description
The ROUND function rounds the value of a cell for you.
Syntax
=ROUND(number, num_digits)

10. Use to take you into the spreadsheet to select a range of cells
FORMULA BUILDER
Use to take you into the spreadsheet to select a range of cells

11. Complex Functions

12. BRACKETS More than one mathematical symbol is used
BODMAS theory -- Calculations performed in the following order:
Brackets over
Division
Multiplication
Addition
Subtraction

13. =(B2-B3)*B4
=B2-B3*B4

14. CALCULATION ORDER
BRACKETS ARE ADDED TO FORCE EXCEL TO PERFORM CALCULATIONS IN A DIFFERENT ORDER. THE CALCULATION IN THE BRACKETS WILL BE PERFORMED FIRST NO MATTER WHAT MATHEMATICAL OPERATION IS USED.

15. EXERCISE Open Functions1.xlsx Insert Formulas Copy Results
Cells G2, H2, I2 and J2
SUM, AVERAGE, MAX, MIN
Copy Results
Down each appropriate range of cells
Save as Functions2.xlsx