AMTRA Presentation – 3/14/09 Presented by: Anne Geraci.

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Presentation transcript:

AMTRA Presentation – 3/14/09 Presented by: Anne Geraci

What do the mean & standard deviation tell us? Overview: Pivot tables Lesson: Mining for data! Lesson: Grouping & Advanced Techniques Get started with PivotTable reports

… but what does this mean?

Summary measures for selected variables Age Count Sum Mean Median Standard deviation9.231 Minimum Maximum Range Variance First quartile Third quartile Interquartile range15.500

 The “typical” age of the individuals in this sample is 51.2 years old.  The youngest person is 37.  The oldest person is 61.  The “average” deviation from 51.2 was 9.2 years.  By the empirical rule, 68% of people in this sample (or in the represented population) will be within 9.2 years (1 standard deviation) of 51.2, a range of 42 to 60 years old.

 Is there a difference in age between a “typical” female and a “typical” male?  What about the color of the car that people drive? Are older people more likely to drive a certain color car?

What’s a pivot table?

Get started with PivotTable reports

COLUMN VARIABLE

Get started with PivotTable reports DATA

Get started with PivotTable reports ROW & COLUMN TOTALS

Get started with PivotTable reports Each column = 1 field Field Name in Row 1 No blank rows or columns All data in one column must be similar (numeric or text)

Get started with PivotTable reports Excel 2007 – Insert tab, Tables group, click PivotTable, then PivotTable again For Excel 2003, click on Data, then PivotTable

Get started with PivotTable reports … select the range for your data and click OK.

Get started with PivotTable reports Classic layout (Excel 2003)New Format in Excel 2007

Get started with PivotTable reports