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An Array of Cells

An Array of Cells. Spreadsheet is an array of cells L ines are part of GUI (delineate cells) Some entries appear to “straddle” cells. Sorting the Data. Sorting is common operation First, h ighlight cells. Sorting the Data. Sorting under “Data” tab Order can be ascending or descending.

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An Array of Cells

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  1. An Array of Cells • Spreadsheet is an array of cells • Lines are part of GUI (delineate cells) • Some entries appear to “straddle” cells

  2. Sorting the Data • Sorting is common operation • First, highlight cells

  3. Sorting the Data • Sorting under “Data” tab • Order can be ascending or descending

  4. Sorting the Data • Sorting algorithm orders by first letter • Each cell entry is “atomic”

  5. Adding More Data to the List • Can format entries as in word processors • italics, bold, fontstyles, font sizes,justification, colored text and so on • Formatting ops under “Home” tab

  6. Naming Rows and Columns • Naming scheme • Columns use letters • Rows use numbers

  7. Naming Rows and Columns • Allows us to refer to a • whole column by letter • entire row by number

  8. Naming Rows and Columns • Reference block of cells (cell range) • E.g., “B2:D7”

  9. Headings • Often give headings for rows and columns

  10. Common Spreadsheet Operations

  11. Computing with Spreadsheets • Usu. process numerical data • Numerical data is usu. associated with text

  12. Writing a Formula • Formulas start with “=” • “= F2 * 0.621” • Operators: +, -, *, /, ^

  13. Writing a Formula

  14. Writing a Formula • Formulas are recalculated when referenced cells change in value • H2 holds a formula, not text or a number • “= F2 x 0.641”

  15. Repeating a Formula • Would like to repeat computation down column • Enter them like first • Copy/Paste • Filling

  16. Copy/Paste • Select cell (^C) • Highlight destination range • Paste (^V)

  17. Copy/Paste • Note updated references • Original cell: F2 * 0.621 • Next cell: F3 * 0.621 • …

  18. Filling • Filling is another way to copy info. • Note “fill handle” in lower-right corner

  19. Filling • When handle is grabbed, it becomes a + • “Pull” handle down column (or across row)

  20. Transforming Formulas: Relative Versus Absolute • Spreadsheet automatically transforms formulas as it pastes/fills them • Two types of cell references • Relative (F2) • H2 = F2 * 0.621 • Absolute ($F$2) • H2: = $F$2 * 0.621

  21. Relative Versus Absolute

  22. Relative Versus Absolute • Absolute references aren’t adjusted • Four cases for references • F2 • $F2 • F$2 • $F$2

  23. Cell Formats • Readability • E.g., # digits

  24. Typical Formatting GUI

  25. Cell Formats • GUI options • Type of info (Category) • Number • # decimal digits • “1000s” separator • Display of negatives

  26. Functions • Common summary operations • sum • average • max • =max(J2:J7) • min

  27. Functions • fx: insert function • Computation value inherits formatting of cell • Dragged fn brings its formatting with it

  28. Filling Hidden Columns • Hidden columns between G and J • Fns still present

  29. Charts • Graphical representation • Select range • Insert tab • Various chart types

  30. Charts • Chart types • Headings detected • Legend • Horizonal axis • Value range determined

  31. Daily Spreadsheets • Use of spreadsheets • Performance in exercise program • Budgets • Record of favorite team’s successes • Save records generated while online banking • Address books

  32. Solving a Problem of Personal Interest • Scenario • Time Zone Cheat Sheet • Internet chatting with friends

  33. Series Fill • Handling of days, dates, and times • Adding 1 to Sunday results in Monday • Adding 1 to January 31 results in February 1 • Adding 1 to 11:00 pm produces 12:00 am • Fill handle or “Fill Series”

  34. Time Zone Cheat Sheet

  35. Getting Started

  36. Solving a Problem of Personal Interest • Scenario • Paying Off Loan • 5% interest rate • To decide how much to borrow, create a spreadsheet of monthly payments required for different amounts borrowed for different times

  37. Paying Off a Loan Initial Setup

  38. Paying Off a Loan • “Payment” (PMT) computation • Inputs • Monthly interest Rate • Number of payments (Nper) • Present value or the amount of the loan (Pv)

  39. PMT GUI

  40. Conditional Formatting • Conditional formatting • Format dependent on criteria • Home tab

  41. Tab-Delimited Data • Import foreign data • Tab-delimited text M# Name Major 1111 Homer Simpson Nuclear Eng. 2222 Lisa Simpson Music • Can copy and paste into spreadsheet

  42. Tab-Delimited Data • Copying an HTML table • Depends on browser

  43. Arranging Columns • Manipulating rows and columns • To re-arrange columns • Insert a new empty column • Cut and paste from old to new

  44. Summary • Array of cells • Cell referencing • Absolute, relative, ranges • Data types • Formulas • Formatting

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