Basic Spreadsheet Skills Review BUS 782. Expression.

Basic Spreadsheet Skills Review

BUS 782

Expression

Arithmetic Operators

• +, -, *, /, ^, ( )

• Evaluating an expression– Examples:

• 4 + 2 – 1• 4 + 2 * 3• 3 – 4 / 2• 8 / 4 * 2• 2 * 3 ^ 2• (2 * 3) + 2 ^ 3

Order of Evaluation

• Operator Multiples

• 1 ( ) Inner to outer, left to right

• 2. ^ left to right

• 3. *, / left to right

• 4. +, - left to right

Formula to Expression

CD

BA

DC

ABCD

BA

D

CAB

AB

H

G

AAB

22

DC

AB

CD

BA

B

A

X

X

Y

X

CBAB

A

A

B

Aor

A

B

A

C

CC

BB C

C

^/

11

((A+B))*2

Expression to Formula

• A / B * C - 2

• A + B * C ^ D

• (A + B / (C – 2)) ^ D + 1

• Evaluating an expression:• 4 * 2 + 8 / 4 * 2 ^ 2 – 1• 18 / 3 ^ 2 * (1 + 2)

Introduction to Excel

What is a spreadsheet?

• It is a matrix composed of rows and columns. Columns are identified by letters and rows are identified by numbers.– Columns: A – Z, AA – AZ, BA – Bz,…

Cell & Range

• Cell: Intersection of row and column identified by specifying column and row coordinates.– A1, B3

• Range: A group of rectangular shape cells identified by specifying the upper left corner and the lower right corner.– B2:D3, A1:A3

Enter Constant in a Cell• Number:

– 2.345, -1000, (1000)– With comma or $: 1,234, $1,234.56– Fraction: 1 7/9, 1/3– Percentage: 5.25%

• Date: mm/dd/yy (without “=“)• If yy < 30 20yy. If yy>=30 19yy• =Date(2012,9,14)

• Time: Min:Sec• 15:25

• Date and time: mm/dd/yy min:sec• Text• Home/Fill/Series

Enter Formula and Function in a Cell

• Formula:– Begin with an “=“– Use operators: +, - , *, /, ^, ( ) to define a formula.

• Function:– =SUM(A1:A3)

• Formula with function:– =SUM(A1:A3) * 5 + B5/2

• To display formulas:– Formulas/Show Formulas

Cell Reference

Demo

Note: Software consists of three parts: INPUT, PROCESS, OUTPUT.

Copy Formula

• Drag the source cell

• Copy/Paste

Cell Reference

• Relative cell reference: After copy, the formula will reference cells with the same relative position as the original formula.– Example:

• Value in cell E6: C6*D6

• Absolute Cell Reference: After copy, the formula still references the same cell as the original formula.– Example:

• Tax in cell F6: E6*$C$3

AnnualGrowthRate: 5% of the previous year. Compute the forecasted sales for

the next 5 years

Mixed Cell Reference

• $ColumnRow: $A1

• Column$Row: A$1

• Examples:• =$A1• =A$1

Cases Where Mixed Cell Reference are Optional

Case that Must Use Mixed Cell Reference