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A little Boolean Logic

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IF loving you is wrong THEN I dont want to be right

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IF-THEN Statements If, Then, Else (a.k.a. Otherwise) What is your procedure? In excel this is written as : IF(Condition, True Value, False Value)

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Sample Problem 1 If a driver is going over 65 mph a speeding ticket should be issued.

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Sample Problem 1 Yes Speed > 65 No Issue Ticket No Ticket

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Sample Problem 1 Speed Caught TravelingAction To Be Taken 65Issue Ticket 55No Ticket Speed Caught TravelingAction To Be Taken 65=IF(A11<65,"No Ticket","Issue Ticket") 55=IF(A12<65,"No Ticket","Issue Ticket")

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Nested IF-THEN Statements What if you have a second condition? IF(Cond, True,IF(Cond, True, False))

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Sample Problem 2 If a driver is going over 65 mph or under 45 mph a speeding ticket should be issued.

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Sample Problem 2 Yes Speed < 40 No Issue Ticket Speed > 65 YesNo Issue TicketNo Ticket

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Nested IF-THEN Statements Speed 65Ticket 14Ticket 55No Ticket Speed 65=IF(A11>64,"Ticket",IF(A11<40,"Ticket","No Ticket")) 14=IF(A12>64,"Ticket",IF(A12<40,"Ticket","No Ticket")) 55=IF(A13>64,"Ticket",IF(A13<40,"Ticket","No Ticket"))

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Using Formulas 1.Highlight the cell you want to write a formula for. 2.Click into the formula bar and type the operation you wish to perform 3.Remember you must always start a formula with an =

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Formula Notations * = multiplication ^ = raise to the power of / = divide by +/- = addition/subtraction ( ) = parenthesis very important for order of operation

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Functions Excel has tons of built in functions to perform everything from rounding to advanced statistical tests.

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Lets kick it up a notch! 1A 2B 2A 1B

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Directions Break the problem into steps and verbalize what you want to do with your partner. Draw a flow chart that outlines your solution Add columns to your spread sheet and perform to perform the necessary calculations in stages

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Data Table Traffic Lane Max Length of Light Minimum Length of Light Time for car to clear intersection # Of Cars Time Needed Time Given (s) # Of Cars Leftover Lane 1A Lane 1B Lane 2A Lane 2B

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Bam! Bam! Bam! 1A 1B 2 3 3

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Tips Break the problem into steps and verbalize what you want to do with your partner. Draw a flow chart that outlines your solution Add columns to your spread sheet and perform to perform the necessary calculations in stages

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Reflection How did you attack this problem? What helped you in solving the problem? Where did you get lost or stuck?

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What was this activity about?

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Problem Solving Step 1: What am I trying to find? Step 2: What information do I know? Step 3: What equation will I use? Step 4a: Do I need to solve for any other information? Step 4b: Pick equations to solve for missing variables. Will this work? Step 5: Plug in all the information and crunch the numbers Step 6: Display your answer and ask does this answer make sense? If No If Yes

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© Janice Regan, CMPT 102, Sept. 2006 0 CMPT 102 Introduction to Scientific Computer Programming Logical and Relational Expressions Nested if statements.

© Janice Regan, CMPT 102, Sept. 2006 0 CMPT 102 Introduction to Scientific Computer Programming Logical and Relational Expressions Nested if statements.

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