1. Aniko Balogh CEU Computer & Statistics Center balogha@ceu.edu
Functions
Aniko Balogh
CEU Computer & Statistics Center

2. TRUE, FALSE, IF function
The IF function allows you to make logical comparisons between a value and what you expect.
IF(Something is True, then do something, otherwise do something else)
So an IF statement can have two results. The first result is if your comparison is True, the second if your comparison is False.
TRUE and FLASE is automatically calculated by Excel:
=A1=B1 - if the cells contain the same value  TRUE, - if the cells contain different value  FALSE

4. Practice TRUE, FALSE Open Practice 4
Look at the percentage change table
If the value in the % Change column is bigger than 0, then the salesperson gets a bonus
Type the following formula: =L2>0, push Enter, TRUE or False will appear
Copy the formula down the column

5. Practice IF Look at the students scores table Pass/Fail
If the Actual score is bigger than 60, then the student passed
Click into E2
Choose the IF function from the function wizard
Logical test: B2>60
Value if true = Pass, Value if false = Fail
Copy the formula down the column

6. Goal Seek
You know the result of a calculation, but you don’t know either of the values
Simple example:
you know, that 7 times something is 56, type the calculation with cell references: =B8*C8, the result will be 7*0=0
You want to change the result to 56
Select the cell that contains the formula. In this case, that's D8.
Click the Data tab, What-If Analysis and choose Goal Seek 
Set cell: D8, To value: type 56, By changing cell: C8, Enter
The result will change to 56

7. Goal Seek More complicated example:
you would like to re-calculate the loan payment example by changing the length of payments
You want to change the monthly payment to HUF
First repeat the PMT exercise to get the result
Select the cell that contains the formula. In this case, that's D4.
Click the Data tab. In the Data Tools group, click What-If Analysis and choose Goal Seek 
Set cell: D4, To value: type (it must be a negative number, as it is a payment), By changing cell: B4 (Number of Payments), Enter
The result will change to HUF

8. VLOOKUP
VLOOKUP is an Excel function to lookup and retrieve data from a specific column in table.
VLOOKUP supports approximate and exact matching, and wildcards (* ?) for partial matches.
The "V" stands for "vertical".
Lookup values must appear in the first column of the table, with lookup columns to the right.

9. VLOOKUP Open Practice 4.xlsx
Search for the grade of students based on their scores:
value - The value to look for in the first column of a table. = score
table - The table from which to retrieve a value. = table of grades PUSH F4 to fix the range
col_index - The column in the table from which to retrieve a value. = 2
range_lookup - [optional] TRUE = approximate match (default). FALSE = exact match.

10. VLOOKUP Who lost her/his ID card?
Lookup the badge number, ID-4537, in the first column and return the matching value in the same row of the fourth column (family name)
Click into I16
value - The value to look for in the first column of a table. = I20
table - The table from which to retrieve a value. = I16:L21 (PUSH F4 to fix the range)
col_index - The column in the table from which to retrieve a value. = 4
range_lookup - [optional] TRUE = approximate match (default). FALSE = exact match.
What’s her/his phone number? – col_index to 2

11. Resources
analysis-tool/
the-formula-result-you-want/
26fe ab8-93a18ad188a1