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

Examples SF State Tuition calculation: PG&E electric charges: http://www.sfsu.edu/~bulletin/current/fee.htm Simple condition PG&E electric charges: http://www.pge.com/myhome/myaccount/charges/ More than one condition

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 < =3000 no tax 3000 < taxable income <= 10000 5% tax Taxable income > 10000 15% tax Complex condition: If an applicant’s GPA > 3.0 and SAT > 1200: admitted

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.

IF Function =IF(condition, ValueIfTrue,ValueIfFalse) Example: Tuition: If total units <= 12, then tuition = 1200 Otherwise, tuition = 1200 + 200 per additional unit In Cell C2: IF(B2<=12, 1200, 1200+200*(b2-12))

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*40 + 1.5*B2*(C2-40))

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

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

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

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))

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

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*100+.25*(B2-100),.2*100+.15*200+.3*(B2-300))

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

Example State University calculates students tuition based on the following rules: State residents: Total units taken <=12, tuition = 1200 Total units taken > 12, tuition = 1200 + 200 per additional unit. Non residents: Total units taken <= 9, tuition = 3000 Total units taken > 9, tuition = 3000 + 500 per additional unit.

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