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Lab 5:Pivot Tables / Pivot ChartsSimon: Chapters 7 & 8
URBPL 5/6010: Urban AnalysisUniversity of Utah
Pam PerlichRev. 09/27/2006
Files for this Lab
CreatePivotTable.xlsAddCalcField.xlsGetPivotTable.xls
Optional : PivotChartDB.mdb
Project 4
Pivot Tables
Summarize and analyze database filesDatabase files
Record basedEvery column must have a titleMaximum size: 8,000 total items and 256 fields
Data Pivot tableCross tabs of dataRow by Column for Data
Create a Pivot Table
Open CreatePivotTable.xlsStudy the rectangular data setNotice the columns with headingsSelect the entire data blockData PivotTable and PivotChartPivot Table / Chart Wizard appears
Pivot Table Wizard
Data source is an excel databaseObjective is to create a pivot tableMake sure you have the entire data block selected (including headings)Step 3
Put data in a new worksheetClick “Layout” to specify configuration
Click “Layout”
Double Click Here to Change Computation
Click “Options”
Insert a Calculated Field
Open AddCalcField.xlsSelect a specific location (cell) for calculation (e.g., F6)Insert Calculated FieldWithin dialogue box
Name the fieldSpecify the formulaInsert variable names if necessary
Notice how Excel automatically adds fields to all products and areas
Insert a calculated field
1) Select cell
2) Insert => calculated field
Link Pivot Table Results to Table
Open GetPivotTable.xlsSpecify desired location of valueInsert Function GETPIVOTDATA
Retrieve value from pivot table
1) Insert => Function => GETPIVOTDATA
2) Specify function arguments
3) =GETPIVOTDATA(PivotTable!C4,PivotTable!A5)
Pivot Chart
Create with same principlesCapabilities
Change chart typeChange computation (from sum to average, etc.)Add and alter fieldsFormat charts
Pivot Chart from Database(Optional – time permitting)
Open a new blank excel workbookDataPivot ChartExternal data sourceDialogue box opens Get DataMS Access DatabaseNavigate to and select PivotChartDB.mdbSelect and import all fieldsDrag fields onto graph to create crosstabulations
Project 4 - Overview
Review state estimates (from the Bureau of the Census) to establish control totalsRetrieve and review data and documentationPrepare data set for pivot workBuild pivot tables/chartsReformat and prepare final presentationInterpret results
Note state control totals and categories
Race and ethnicity are distinct
2,469,585 is 7/1/2005 estimate for Utah
Project 4: Data Retrieval
http://www.census.gov/popest/estimates.php Estimates Data Counties County estimates by demographic category Download entire data set County estimates by demographic characteristics - age, sex, race, and Hispanic Origin Race and Hispanic Origin 6 race groups - 5 race alone groups and one multiple race group State datasets
http://www.census.gov/popest/counties/asrh/CC-EST2005-RACE6.htm
Retrieve and Review Layout and Documentation Files
CC_EST2005_6RACE_layout.txtcompraceho.html
Note: The original data set has been reclassified to eliminate the “Some Other Race” category and distribute this across all race categories.
Reformat the Data Set For Pivot Table Analysis
Change the time labels to match those in the file layout document (e.g., time = POPESTIMATE2001 => July 1, 2001; etc.) Note that there are two entries for April 1, 2000 – the decennial enumeration and an adjusted estimates base. These will vary in some cases.Use search and replace operations (or some other method) to change codes to labels in the sex, origin, and race columns (e.g., search and replace “0” in the sex column with “Total” etc.)
2,469,585 is 7/1/2005 estimate for Utah – It matches our result.
Why is “grand total” double this amount?
Data Set Tips
Note that if you include all race categories and Hispanic, not Hispanic, and Total, and male, female, and total, that you get a number that is MUCH too large.
Grand total will be 4 times the state total population estimate.
Select only a subset of fields to extract.
Error Check Totals
Table 1: Annual Estimates of the Population for the United States and States, and for Puerto Rico: April 1, 2000 to July 1, 2005
Geographic Area
Population estimates April 1, 2000
July 1, 2005
July 1, 2004
July 1, 2003
July 1, 2002
July 1, 2001
July 1, 2000
Estimates base
Census
.Utah 2,469,585 2,420,708 2,378,696 2,336,673 2,287,736 2,243,136 2,233,198 2,233,169
Make sure you “totals” and “grand totals” for all counties match the reported state population estimates: http://www.census.gov/popest/states/tables/NST-EST2005-01.xls