[email protected] ENGR-25_Lec-28_Excel-1.ppt 1 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Bruce Mayer, PE Licensed Electrical

[email protected] • ENGR-25_Lec-28_Excel-1.ppt1

Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods

Bruce Mayer, PELicensed Electrical & Mechanical Engineer

[email protected]

Engr/Math/Physics 25

MS ExcelWorkSheet

s



Learning Goals

Enter Data into Excel• Use Copy and Fill

Perform Calculations Using Excel• Writing “Formulas”

– Proper Syntax– InterRelationship Between Cells

• Invoking and Using Built-in Functions

Explain the difference between ABSOLUTE and RELATIVE addresses



Learning Goals cont

Construct Charts and Graphs• Comparison Charts → Bar, Col, Radar• Analysis Charts → Scatter, Surface

– Curve Fits → Linear Regression



SpreadSheets

SpreadSheet Defined

A table of values arranged in rows and columns. The Intersection of a Row & Column is Called a Cell. • Each cell-value can have a predefined

relationship to the other cell values.• If you change one cell-value other values

may change depending on the interrelationship of the cells.



MicroSoft Excel Excel is the MS-Office Application

program used to create spreadsheets Within Excel, users can organize data,

create charts, and perform calculations. Excel allows the user to create very large

spreadsheets, reference information from other spreadsheets, and it permits organized storage and modification of information

Excel operates like other MS Office programs and has many of the same functions and shortcuts as MSword & MSpowerpoint

http://www.4kcc.com/blog2/wp-content/uploads/2012/01/Excel-icon.png



Why Excel?

Excel can do most (not all) of the common (i.e., useful & popular) tasks done in MATLAB or similar software

Excel is much more accessible • MATLAB is Powerful, but it’s also

SPECIALIZED and EXPENSIVE• Excel is: Ubiquitous, and Quick & Easy

Excel is much more POWERFUL than Many people think



MSExcel 2010Specifications

http://office.microsoft.com/en-

us/excel-help/excel-specifications-and-limits-

HP010342495.aspx?CTT=5&origin=HP005199

291

17e9 cells/wksht



Excel WorkSheet (1) An Excel File is also Called a

WORKBOOK• Each workBOOK can

Contain a large number of workSHEETs (>200)

Where a column and a row intersect is called a CELL. • For example, cell B5 is

located where column B and row 5 meet. You enter your data into the cells on the Active (Displayed) worksheet

The tabs at the bottom of the screen represent different worksheets within a workbook.

Selected Cell

NAME BOX: Displays Selected Cell

Active WorkSheet

WorkSheet ScrollButtons



Excel WorkSheet (2)

Active Cell

The NAME BOX indicates what cell you are in. This cell is called the “active cell.” This cell is highlighted by a black box.

Text DOES appearin a Text Cell

The FORMULA BAR indicates the contents of the cell selected. Any formula created will appear in this space

The RESULT of the Formula will Appear in a Formula Cell; NOT The formula itself



Excel Data Types Spreadsheets can

contain Several types of data• Numbers• Text• Dates & Time

– Can Add, Subtract

• Currency• Charts• Equations• Pictures



Cell Addressing COLUMNS are

designated by alphabetical values such as A, B, C ….

ROWS are designated by numerical values such as 1, 2, 3 ….

Individual cells are designated by ordered pairs containing the row and column designation such as A1,C7, B10 ….

B10 =Active Cell



Excel DATA Entry Move the Mouse

Pointer to the Desired Cell

Click Cell to Make it Active, then do One of• Type Data DIRECTLY

Into the Cell• Move Cursor to

FORMULA BAR and type there Type in Cell

Type in Formula Bar



Excel FORMULA Entry

To Write a Formula, Rt-Clik the Cell To make it Active• Start Typing, OR• Type in Formula Bar

You can also calculate values using formulas.

The formula can perform mathematical operations using data from other cells.



Fill FORMULAS Enter the Formula in

One Cell Select the Formula

Cell, Bottom Rt Corner of selection Box turns to a “+”

Drag the the + up/down or Across

“Cell References” adjust automatically



Fill DATA If you need to enter an

INCREMENTED Data Series you can skip making a Formula, and Use FILL instead• Type the First 2 or 3 values

in the Sequence• Select the Data Cells,

Bottom Rt Corner of the selection Box turns to a “+”

• Drag the the + up/down or Across



Anatomy of a Formula

RELATIVE Reference; Changes when cell Filled, Copied or Moved

164231744 FCFFCB XxXxx X

ABSOLUTE Reference; Does NOT Change when cell Filled, Copied or Moved

MIXED Reference; COL (F) Changes, while ROW (16) Does NOT when moved or copied



Excel Built In Functions

SUM (math & trig) AVERAGE (statistical) SIN (math & trig) IF (logical) NPV (financial) CONCATENATE (text) LOOKUP (lookup and reference) Many More …



SUM(number1, number 2,…)

Example=SUM(5,7,11) equals 23

If cells A2:E2 contain 5, 15, 30, 40, 50:=SUM(A2:C2) equals 50

=SUM(A2:E2, 13) equals 153



AVERAGE(number 1, number 2,…) Example

REGION A1:E1 is NAMED “Luminance”

Then Several Average Calcs



SIN(number)

NOTE: Angle (number) must be provided in radians • If The argument is in degrees (°), Use the

RADIANS Fcn to convert it to radians.

Some SIN & COS Calcs

0.0

30sin



IF Function

The Syntax

Logical_test any value or expression that can be evaluated as TRUE or FALSE. • =IF(A10<=100,"Within budget","Over budget")• =IF(A10=100,SUM(B5:B15),"")

Value_if_true value returned if logical_test = TRUE Value_if_false value returned if logical_test = FALSE

• NOTE: Value_if_false can also be another formula.

Up to 64 IF functions can be nested in Excel 2010

IF(logical_test,value_if_true,value_if_false)



Logical Operators

EXCEL• = (equal to)• > (greater than) • < (less than) • >= (greater than or

equal-to)• <= (less-than or

equal-to)• <> (not equal to)

MATLAB• == (Equal To)• > (Greater Than)• < (Less Than)• >= (Greater Than or Equal-To)• <= (Less Than or Equal-To)• ~= (Not Equal To)



COUNTIF(range, criteria) Counts the number of cells within a

range that meet the given criteria Let C5:C8 contain "apples",

"oranges", "peaches", "apples", respectively:• COUNTIF(C5:C8,"apples") equals 2

Suppose P2:S2 contain 29, 54, 73, 86, respectively:• COUNTIF(P2:S2,">55") equals 2



Example Data Scaling (1)

Consider a NATION wide Survey of Engineering Baccalaureate New Grad Salaries

Now Examine Similar Data from UC Berkeley

UCB Salaries are Higher

66.461.1

60.459.358.9

56.353.6

52.450.550.4

49.349.0

48.345.2

42.742.1

40.740.039.9

39.038.4

36.536.5

35.535.4

32.732.3

31.2

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

Chemical EngineeringComputer Engineering

Computer ScienceElectrical Engineering

Mechanical EngineeringAero Engineering

Construction MgmntCivil Engineering

FinanceNursing

Logistics/Matl-MgmntMIS/DP

AccountingHuman Resources

MarketingBusiness Admin

Agricultural Mgmnt Political Sci

Criminal JusticeCommunications

HistoryTeacher, 9-12

Liberal ArtsForeign Language

Hospitality ServicesFitness/Recreation

PsychologyTeacher, k-8

Average Starting Salary ($k/yr)

Ba

ch

elo

rs D

eg

ree

Fie

ld NACE Bachelor's DegreeNew-Grad Salaries

Jul2010

Salary-Survey-2010_1007.xls

UC Berkeley Engineering Bachelor's New-Grad Salary • 2009

75.8

67.3

65.7

65.1

60.5

59.9

0 10 20 30 40 50 60 70 80

EE

Che

mE

MS

EM

EC

EIE

En

gin

eeri

ng

Dis

cip

lin

e

Median Starting Salary ($k/yr)file = Salary-Survey-2010_1007.xls



66.461.1

60.459.358.9

56.353.6

52.450.550.4

49.349.0

48.345.2

42.742.1

40.740.039.9

39.038.4

36.536.5

35.535.4

32.732.3

31.2

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70





FinanceNursing











Ba

ch

elo

rs D

eg

ree

Fie


Jul2010


EngineeringNoted in GREEN

Color



UC Berkeley Engineering Bachelor's New-Grad Salary • 2009

75.8

67.3

65.7

65.1

60.5

59.9

0 10 20 30 40 50 60 70 80

EE

Che

mE

MS

EM

EC

EIE

En

gin

eeri

ng

Dis

cip

lin

e

Median Starting Salary ($k/yr)file = Salary-Survey-2010_1007.xls



Example Data Scaling (2)

We want to NORMALIZE (i.e. Scale-UP) the National Data to Account for the higher Salaries (and Cost-of-Living) in the SF Bay Area

Use as Scale Factor the Avg Engineering Salaries

Take from the NACE Data The average of

66.461.1

60.459.358.9

56.353.6

52.450.550.4

49.349.0

48.345.2

42.742.1

40.740.039.9

39.038.4

36.536.5

35.535.4

32.732.3

31.2

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70





FinanceNursing











Ba

ch

elo

rs D

eg

ree

Fie


Jul2010




All Done for Today

YouTubeExcel

Tutorials

Google Videos → Excel Tutorials



Bruce Mayer, PELicensed Electrical & Mechanical Engineer

[email protected]

Engr/Math/Physics 25

Appendix

6972 23 xxxxf tfyyy

735



Demo Start = Demo_Salary-Survey_Scaling_Demo-Start_1012.xls



Demo CALC = File Demo_Salary-Survey-2004_Scaling_0511.xls



Demo Result from CHART WIZARD w/ Fine Tuning = File Demo_Salary-Survey-2004_Scaling_0511.xls

Documents

[email protected] ENGR-25_Lec-28_Excel-1.ppt 1 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Bruce Mayer, PE Licensed Electrical