Upload
waylon-badder
View
218
Download
0
Tags:
Embed Size (px)
Citation preview
1
DO NOT TURN ON THE
COMPUTERS TODAY!!
2
Introduction to Electronic Spreadsheets
Using Microsoft Excel
3
What is a Spreadsheet? A software/program used to assist people in
performing tasks that require the use of mathematical calculations and operations.
A spreadsheet is designed around a table system of rows and columns.
Major part of any spreadsheet is numbers or values.
Different from a word processing program where the major part is text.
4
Who Uses a Spreadsheet?
Anyone responsible for providing numerical data in any form.
Accountants—preparing financial documents Teachers—reporting grades and averages Managers—reporting sales, profits, & losses Tax Preparers—reports for tax purposes Payroll—employee reports Anyone needing mathematical answers
5
6
Parts of a Spreadsheet
Rows
Columns
Cells
Ranges
7
1. Rows A row is a horizontal section of a
spreadsheet. Rows run from left to right. Rows are labeled with numbers. (1 2 3 4 5) There are 65,536 rows in an Excel
Spreadsheet. Row Labels
8
2. Columns A column is a vertical section of a
spreadsheet. Columns run from top to bottom Columns are labeled with letters. (A B C D) There are 256 columns in an Excel
spreadsheet.
Column Labels
9
Rows & Columns (cont’d) On your screen you only see columns A – K Columns go from A to IV, once at column Z,
labeling begins again with AA, AB, AC, and goes through the alphabet 9 more times ending with the I’s and cell IV. Thus we have 256 columns in all.
On your screen you only see rows 1 – 25. Rows go up through 65,536.
10
3. Cells A cell in where a row and a column meet or
intersect. (the intersection of a row and a column.
The smallest unit of the spreadsheet. The actual area where data is entered into
the spreadsheet. Labeled with a letter and a number. (A1 B7
D12 AB978 IV892)
A1 C2 E3 G4I2
11
EXCEL Spreadsheet---HUGE
A1 IV1
A65536 IV65536
12
How Many Cells In a Spreadsheet?????
ROWS X COLUMNS
65536 X 256
16,777,216
13
4. Ranges A range is any ADJACENT set of cells in a
spreadsheet. Adjacent means all of the cells are either side by side or up and down from one another.
Ranges are labeled as follows:
First Cell in Range : Last Cell in Range
Example: A1:A8 D1:D12
A1:F1 G12:Z12
14
Examples of Ranges
Range of Cells A1 through A9
A1:A9Range of Cells C2 through G2
C2:G2
Range of Cells G5 through J9 G5:J9
15
More Ranges All Cells in Row 1A1:IV1 All Cells in Row 8A8:IV8 All Cells in Column CC1:C65536 All Cells in Column IVIV1:IV65536
16
Types of Data in a Spreadsheet
1. Labels
2. Values orNumbers
3. Formulas
17
1. LABELS A label is any cell that has something other
than numbers in it. Labels include cells that have letters and/or
special symbols. Labels cannot have mathematical operations
performed on them. Usually labels are used to identify the
numbers in the spreadsheet. Many times labels are column headings. Example: Student Names in a Teacher
Grade book Spreadsheet would be labels.
18
Examples of Labels
19
2. VALUES A value is any cell that contains only numbers Numbers can include the digits 0-9, a period
for a decimal point, and a dash for a negative sign.
Values can have mathematical operations performed on them.
By far the most important part of the spreadsheet
Values are your “givens”—the numbers you already know.
20
Examples of Values
21
3. FORMULAS The reason you are doing the spreadsheet in
the first place. The “Unknowns”. The values you are trying
to find or answer. Example: In a teacher’s grade book, the
average is the unknown. This is why the teacher does the grade book in the first place.
The formulas give us our answers within the spreadsheet.
22
Examples of Formulas
The User Did NOT Type These Numbers, The Spreadsheet Calculated them from Formulas Entered by the User.
23
Text, Values, and Formulas
FormulasValuesLabels
24
FORMULAS (cont’d)
RULE: You must begin EVERY formula with an equals sign
=Examples: =A1+B2 =C5-D11
=B27/3 =B54+B55+B56
25
Mathematical Formulas When programming formulas in a
spreadsheet, you must follow your typical arithmetic rules learned since elementary school.
Please Excuse My Dear Aunt Sally
(order of operations when solving a
mathematical expression)
26
Please Excuse My Dear Aunt Sally
• P Items in Parenthesis
• E Exponents
• M Multiplication
• D Division
• A Addition
• S Subtraction
27
= 10 + 5 + 15 / 5
Answer 18= (10 + 5 + 15) / 5
Answer 6= 10 + (5 + 15) / 5
Answer 14
Order of Operations (cont’d)
28
Arithmetic Operators
+ Addition =A1+B2
- Subtraction =A1-B2
* Multiplication =A1*B2
/ Division =A1/B2
^ Exponentiation =A1^B2
29
Exponentiation (power)
23 Means 2 times 2 times 2in a spreadsheet it would be typed as 2^3
45 4^5 and 210 2^10
30