ExCel Chapters 1 and 2 Classwork: Problems 2-3, 2-6, 2-8, 2-10 Homework: Problems 2-4, 2-7, 2-9, 2-13

Chapter 1: Engineering Analysis and Spreadsheets Spreadsheet Overview General Problem-Solving Techniques Applicable Engineering Fundamentals Mathematical solution Procedures

Vocabulary: Tested on the exams SPREADSHEET is a table containing numerical and/or alphanumeric values. CELLS are individual elements within a spreadsheet. Identified by an ADDRESS which indicates ROW and a COLUMN. WORKSHEET is a tabular collection of cells. A spreadsheet can contain multiple worksheets (tabs).

What can Excel do for me? Import, export, process and store data Display data graphically Analyze data statistically Fit algebraic equations through data sets (regression) Solve single and simultaneous algebraic equations Solve optimization problems As the input parameters change, the entire worksheet is recalculated. Very easy to examine the effect of varying the input.

General ENGR Problem Solving Techniques 1. Think about the problem before you start to solve it. 2. Consider drawing a sketch before you solve it. 3. Ignore peripheral or irrelevant information. 4. List the input (what is known) and output (what must be determined) 5. What engineering principles apply to this problem. 6. Choose which method you will use to solve this problem. 7. Develop your solution in an orderly and logical manner. Clearly label everything including units.

Problem Solving – con’t 8. Check you answer. Does it make sense? Are the units correct? Did you answer the question posed? 9. Examine that your solution is clear and complete. Is the logic used to solve the problem clear.

ENGR Fundamentals Equilibrium – force, flux, chemical. Conservation laws – mass, energy and possibly momentum. Rate Phenomena – a potential drives a flux. For example, Ohm’s law of electrical current flow where i is the current flow (a flux) and V represents a voltage differential (a potential).

Mathematical Solution Procedures Data statistics like mean and standard deviation Curve-fitting techniques Interpolation Solve algebraic equations Solve simultaneous linear algebraic equations Evaluate integrals Engineering economic analysis Optimization CLASSICAL METHODS use algebra and calculus. NUMERICAL METHODS use a computer to perform successive approximations.

Chapter 2 Creating an Excel Worksheet

Topics Entering and Leaving Excel Getting Help Moving around the Worksheet Entering Data Correcting Errors Using Formulas Using Functions Saving and Retrieving a Worksheet Printing a Worksheet (we will omit this section)

Entering and Leaving Excel Study Figures 2.1 and 2.2 and 2.3 Be able to label the parts of an Excel worksheet for the exam Study the vocabulary words that are in italics Several ways to leave Excel: from the File Menu, from the X on the upper right. Be sure to save you work before you leave!

Getting Help F1 key ? Icon (upper right)

Moving around the Worksheet Mouse – click on a new cell to make it the active cell. Arrow keys – moves cell to next adjacent cell. New active cell. PageUp, PageDown – vertical movement of several lines. New active cell. Ctrl-LeftArrow, Ctrl-RightArrow, Ctrl-DownArrow, Ctrl-UpArrow – movement to opposite edge of the worksheet. New active cell. Scroll bars. Displays a new area but you must click with the mouse to make a new active cell Home, End keys. Ctrl-Home goes to A1 cell. Ctrl-End goes to the last cell that contains data. GoTo key. Pressing this allows you to enter a cell reference to go to.

Entering Data Numerical value – known as number constant String – known as a text constant Numerical values can be formatted in many ways. Do Problem 2.3 as classwork. Do Problem 2.4 as homework.

Correcting Errors Edit as you go or after you have completed the entry an moved on from that cell.

Using Formulas Formulas expresses interdependencies among the values in different cells within a worksheet. Formulas let you perform arithmetic operations, combine strings and compare the contents of one cell with another. FORMULAS BEGIN WITH AN EQUAL SIGN (=), FOLLOWED BY A NUMERICAL EXPRESSION CONTAINING CONSTANTS, OPERATORS AND CELL ADDRESSES.

Operators Numerical operations (PEMACC): percentage, exponentiation, multiplication and division, addition and subtraction, concatenation (&), logical comparisons (, =, <>) Parentheses override this order and use parentheses freely Do Problem 2.6 and 2.8 and 2.10 as classwork

Using Functions Excel has many, many pre-defined functions such as MEAN which will find the mean (average) of a group of cells. A function consists of a FUNCTION NAME followed by one or more ARGUMENTS (which are put in parentheses). The arguments are usually cell references Functions can have arguments which are also functions. Formulas can be used as function arguments. You can search for functions using the fx button. You can start typing a function name as part of a formula and Excel will present a list of functions to choose from. Or, access the Function Library within the Formulas tab on the Ribbon.

Trig Functions The trig functions expect an argument in RADIANS. To convert degrees to radians simply by using the RADIAN function. So, to find the tangent of 45 degrees type Tan(radians(45))

Saving and Retrieving a Worksheet Printing a Worksheet Typical Office 365 methods are used to save and open worksheets. We will not cover printing a worksheet due to many variations in types of printers, etc.

HOMEWORK Problems 2-4, 2-7, 2-9, Submit as one Excel workbook with separate worksheets. File name is LastName_FirstName_HW2