1. Decision: Action based on condition
IF Function
Decision: Action based on condition

2. Examples SF State Tuition calculation: PG&E electric charges:
Simple condition
PG&E electric charges:
More than one condition

3. Examples Simple condition: More than one condition: Complex condition:
If total sales exceeds $300 then applies 5% discount; otherwise, no discount.
More than one condition:
Taxable Income < = no tax
3000 < taxable income <= % tax
Taxable income > % tax
Complex condition:
If an applicant’s GPA > 3.0 and SAT > 1200: admitted

4. Comparison Less than: < Less than or equal: <=
Greater than: >
Greater than or equal: >=
Equal: =
Not equal: <>
At least: >=
At most: <=
No more than: <=
No less than: >=
A comparison returns True/False.

5. IF Function =IF(condition, ValueIfTrue,ValueIfFalse) Example:
Tuition: If total units <= 12, then tuition = 1200
Otherwise, tuition = per additional unit
In Cell C2: IF(B2<=12, 1200, *(b2-12))

6. Example: Compute weekly wage
Example: Compute weekly wage. Overtime hours are paid 50% more than the regular pay.
In Cell D2: If(C2<=40, B2*C2, B2* *B2*(C2-40))

7. Example: Tax rate is based on married status:
Single: 15%
Married: 10%
In D5: If(B5=“S”,$C$1*C5, $C$2*C5)

8. Example: A restaurant charges service fee based on this rule: 15% of the check amount with a minimum of $2.

9. Exercises
1. The average of two exams is calculated by this rule: 60% * higher score + 40% * lower score.
2. An Internet service provider offers a service plan that charges customer based on the following rules:
The first 20 hours: $10
Each additional hour: $1.5

10. Nested IF Example: Rules to determine bonus:
JobCode = 1, Bonus=500
JobCode = 2, Bonus = 700
JobCode = 3, Bonus = 1000
In C2: If(B2=1, 500, If(B2=2, 700, 1000))

11. 1
JobCode= 1
Or <> =1 2
JobCode=2 Or <> 2 3

12. Example
Electric Company charges customers based on KiloWatt-Hour used. The rules are:
First 100 KH, 20 cents per KH
Each of the next 200 KH
(up to 300 KH), 25 cents per KH
All KH over 300, 30 cents per KH
In C2: If(B2<=100, .2*B2,If(B2<=300,.2* *(B2-100),.2* *200+.3*(B2-300))

13. What if we have more than 3 conditions
Example: Bonus
JobCode = 1, Bonus = 500
JobCode = 2, Bonus = 600
JobCode = 3, Bonus = 700
JobCode = 4, Bonus = 800
JobCode = 5, Bonus = 1000 …
Other functions:
Table lookup

14. Example
State University calculates students tuition based on the following rules:
State residents:
Total units taken <=12, tuition = 1200
Total units taken > 12, tuition = per additional unit.
Non residents:
Total units taken <= 9, tuition = 3000
Total units taken > 9, tuition = per additional unit.

15. Units <= 12 or Not
Resident or Not
Units <= 9 or Not