DAY 8:

MICROSOFT EXCEL

CHAPTER 3, 4, 5

Daksha Yadav

daksha.yadav@mail.wvu.edu

September 11, 2013

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ANNOUNCEMENTS

• Homework Help Live! for HW #1 - Thursday at 7pm

• Able to view a video walk-through of a HW #1-like

project on YouTube, work through it on their own,

and ask questions/get responses in real time.

• YouTube

channel: http://www.youtube.com/wvucs101.

• Instructions:http://cs101.wvu.edu/resources/homewo

rk/homework-help-live/homework-1/.

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TRENDLINES

• Used to predict future or past values by

extrapolating the lines already plotted on a

chart

• Types:

– Linear

– Exponential

– Linear Forecast

– Two Period Average

ADDING TRENDLINES

Select Data Series (In this case C grades)

ADDING TRENDLINES - CONT’D

THE TRENDLINE

PREDICTING THE FUTURE/PAST

WITH TRENDLINES

• Right-click on the trendline you want to predict the values into the future or past

• Click on Format Trendline

• Forecast Group -> Set Periods

• Click on the different Trend types to view how they will predict the data

(If you see it predicts negative gasoline prices, for instance, you may want to change trend types)

R-SQUARED VALUES

• Gauge the accuracy of how a trendline fits

the underlying data

• Range from 0 to 1, with higher numbers

(closer to 1) being better fits, not likely to get

a value of 1

• At the bottom of the Format Trendline dialog

box, “Display R-squares value on chart”

• Select between the different chart types to

view which fits the data the best

TRENDLINE EQUATIONS

Under the Format Trendline dialog box, you

can also view the trendline equations.

IMPORTIN G DATA

• Importing is the process of inserting data

from one application or file into another.

• Excel lets us import different types of

data!

– Text file

– Access DB

– XML, etc.

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IMPORT(ANT) DECISIONS

Decide ahead of time if you want to embed data or link to it.

Embedded data: Is not linked to the original source, and can be edited. A change in the data in one place does not affect the other.

Data as a connection: Linked to the original data, Excel can then be refreshed from the source and the data updated if any changes are made.

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IMPORTING TEXT FILES

• Delimiters: Special characters that

separate the data, so it doesn’t run

together.

• Most common: TAB (Tab delimited) ,

Comma (Comma Separated)

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TAB DELIMITED TEXT

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TAB DELIMITED IMPORT

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CSV

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CSV IMPORT

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IMPORT STEPS

• Data Ribbon

• Get External Data

• From Text

• Select File

• Follow Wizard Prompts

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THE WIZARD

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THE WIZARD (CONTD.)

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THE WIZARD (CONTD.)

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OTHER DATA SOURCES

Source Definition

SQL Server Create a connection to an SQL server

table and import data as a table or

PivotTable.

Analysis Services Create a connection to an SQL server

analysis services cube, and import

data as a table or PivotTable

XML Data Import Open or map an XML file into Excel

Data Connection Wizard Import data for an unlisted format by

using the Data Connection Wizard and

OLEDB.

Microsoft Query Import data for an unlisted format by

using the Microsoft Query Wizard and

ODBC.

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HIDING AND UNHIDING ROWS,

COLUMNS, AND WORKSHEETS

• Hidden refers to a state in which rows,

columns, and sheets are invisible

• Often done to conceal nonessential

information, information not needed at a

particular time, confidential information, or

sensitive data

– Examples include Social Security numbers,

salary or rate of pay, pricing data, and trade

secret information

LARGE DATABASES

• Freezing rows and columns: to keep

selected rows and columns visible even if

you scroll down or sideways

• Printing Large Databases

– Set Print Area

– Page Breaks

– Page Break Preview

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EXCEL TABLES

• A table is an area in the worksheet that contains rows and columns of similar or related information

– Can be used as part of a database or organized collection of related information

– Worksheet rows represent the records; worksheet columns represent the fields in a record

• The first row contains the column labels or field names – Identifies data to be entered in the columns

• Each row in the table contains a record

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EXCEL TABLES

• Every cell in the table area, except the field

names, contains a specific value for a specific

field in a specific record

• Every record (row) contains the same fields

(columns) in the same order as every other

record

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EXCEL TABLES (CONTD.)

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First row

contains field

names

Each row is

a record

TABLE TOOLS

• Has all the options related to formatting

the table

• Change the Table Style of the Current

Table

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FIND AND REPLACE

• Allows global editing of data

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SORTING DATA

• Sorting arranges records in a table by the

value in field(s) within a table

• The sort command puts lists in ascending

or descending order according to specified

keys

• Keys are the fields on which records are

sorted

• FILTERS: Text filters, Number filters,

Custom filters

• TOTAL ROW

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