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Exploring Engineering

Exploring Engineering. Chapter 3, Part 2 Introduction to Spreadsheets. Spreadsheets Can Aid in Calculation, Visualization and Simulation. Data Visualization. Data are raw facts. For example a collection of numbers.

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Exploring Engineering

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  1. Exploring Engineering Chapter 3, Part 2 Introduction to Spreadsheets

  2. Spreadsheets Can Aid in Calculation, Visualization and Simulation

  3. Data Visualization • Data are raw facts. For example a collection of numbers. • Information can be gained by presenting the data in a way that makes it possible to visualize the meaning of the data.

  4. Organizing Data • Headings • Labels • Formatting numbers as percentages, currency, etc. • Graphs can be used to display data in a way that the significance of the numeric data can be seen. • Ordering the data by sorting.

  5. Performing Computations • Spreadsheets provide built in functions to perform calculations using the data. • MAX • MIN • SUM • AVERAGE • STDEV • Etc for many, many, more functions

  6. Knowledge • Knowledge results from the interpretation of information. • It takes a human being with expertise to interpret the information to gain knowledge.

  7. Spreadsheets • Definition: A spreadsheet is software designed to manipulate and analyze numbers and formulas in rows and columns. • We will be using Microsoft Excel in this class. However there are similar programs such as Lotus 123.

  8. The Spreadsheet

  9. Cell Contents • The types of cell contents: • Alphanumeric – text • Headings • Labels • Numeric • Integers • Floating point • Equations and formulae: B1+B4/H13 • Predefined Functions: Previously discussed in slide 5.

  10. An Example • We will be creating a worksheet for a class grade sheet. • The input to a spreadsheet requires entering numbers in cells. • In this case the input will be grades.

  11. Grade sheet • Final Grade Rubric • Assign each exam as 18% of the final score, the final exam as 36% of the final score, and homework as 10% of the final score, then a student's final score is: Final Score = 0.18*(Ex1 + Ex2 + Ex3) + 0.36*(Final Exam) + 0.10*(Homework Score) • Assign a letter grade according to: • If Final score > 80, A • If Final score > 70, B • If Final score > 65, C • If Final score > 60, D • If Final score < 60, F

  12. Excel Spreadsheet • Write one line then copy and paste the rest

  13. Excel grade sheet • See how you get the average of each exam

  14. It’s easy for the grader to cheat! • See how you can get the total! If you easily want • to change the weighting, go to C1, or E1 or G1 etc. • Notice the use of absolute K$1 and relative D4, G4, • etc., addressing. Relative shifts with where you copy it • but absolute fixes column or row (or both)

  15. Excel Grade sheet • Notice the use of the IF statement …IF(test, true, false)

  16. Summary • Learn to use a spreadsheet • Use its formatting capability • Use its mathematical functions • Use its relative and absolute addressing • Use its logical functions • Use lots more!

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