DAY 10: EXCEL CHAPTER 7-8 RAHUL KAVI September 19,

LAST CLASS Outlines/Groups PivotTables PivotCharts Conditional Functions Rank/Percentile 2

NESTED IF IF functions can be nested For example: –A store gives its employees commission based on sales –For sales <= $1000, they earn 5% –For sales > $1000 and <= $5000, they earn 7.5% –For sales > $5000, they earn 10% –IF(sales <= 1000, sales*0.05, IF(sales <= 5000, sales*0.075, sales*0.10)) 3

LOGICAL FUNCTIONS Logical functions accept True and False values AND(logical1, logical2) –Returns True if logical1 AND logical2 are both True, False otherwise OR(logical1, logical2) –Returns True if either logical1 OR logical2 is True, False otherwise NOT(logical) –Returns the opposite of logical. True -> False, False->True 4

LOGICAL FUNCTION EXAMPLE For a class, bonus points are given for having no absences and also for having no late assignments –Show students who got bonus points in both categories –Show students who got bonus points for one category –Show students who got no bonus points 5

MATCH MATCH(lookup_value, lookup_array, [match_type]) –Looks up the position of lookup_value in lookup_array –match_type: 1 finds the largest value = lookup_value from an array in descending order; 0 finds an exact match for lookup_value 6

INDEX INDEX(array, row_num, [column_num]) –Returns the value in array in the row specified by row_num –If the array range has multiple columns, you can specify which column you want to index by specifying the column_num argument 7

MATCH/INDEX EXAMPLE We have sales per city for a company We would like to know –What are the lowest sales numbers for any city? –What is the city of lowest sales? Do calculate this we will also calculate –What is the position of the city with the lowest sales in our list? 8

NESTING FUNCTIONS GRAPHICALLY Open the dialog for your outermost function Click the argument box where the nested function is needed Click the Name Box arrow to select the function you need Enter the arguments for the nested function Click the name of the outer function in the formula bar to return to the outer function’s dialog box 9

ADVANCED FILTERING Create a Criterion Range –Copy the labels from the table and add conditions for any fields you want to restrict –Multiple rows of conditions will create an OR filter Data->Sort & Filter->Advanced –Filter in-place or Copy –Select data range –Select criterion range –Select location if copying 10

DSUM, DAVERAGE, DMAX, DMIN, DCOUNT DSUM(data_range, field_name, criteria_range) Same arguments for the other functions –data_range specifies the table we want to aggregate data from –field_name specifies the label above the column we would like to aggergate –criteria_range specifies the range with your criteria (like advanced filtering) 11

FINANCIAL FUNCTIONS IPMT(rate, per, nper, pv) –Calculates the interest for a specific payment period PPMT(rate, per, nper, pv) –Calculates the principal repayment for a specific payment period CUMIPMT(rate, nper, pv, start_period, end_period, type) –Calculates the cumulative interest paid CUMPRINC(rate, nper, pv, start_period, end_period, type) –Calculates the cumulative principal repaid 12

PV AND FV PV(rate, nper, pmt) –Calculates the present value of future payments FV(rate, nper, pmt) –Calculates the future value of an investment 13

WHAT-IF ANALYSIS What-If Analysis is a process of experimenting with different variables and assumptions to observe how they affect the results of the situation –We will see examples of one-variable analysis and two-variable analysis 14

ONE VARIABLE ANALYSIS The variable you will be investigating will be tried for several different substitution values. –For example, changing the interest rate on a loan –Calculate the desired value for each possible substitution value 15

SERIES Home->Editing->Fill->Series –Creates series of values you can use as substitution values Step value: distance between values Stop value: where you want the series to stop 16

WHAT-IF TOOL Data->Data Tools->What-If Analysis->Data Table –Select the reference for the cell you want to replace If your series is in rows, use ‘Row input cell’ If your series in in columns, use ‘Column input cell’ –Click Ok to complete the table 17

NEXT CLASS Two Variable What-If Analysis Goal Seek Scenario Manager Solver Hyperlinks Linked Workbooks Templates 18