2. limitations
DESCRIPTION
Week 2TRANSCRIPT
Spreadsheets are code
Limitations of spreadsheets
95% of all U.S. firms use spreadsheets for
financial reporting
50% of spreadsheets form the basis for
decisions
Spreadsheets exist ‘under the radar’
Spreadsheets live 5 years on average
Average sheet is used by 12 people
33% of spreadsheets has a manual
Complex spreadsheets can to disaster
The European Spreadsheet Risk Interest
Group (Eusprig.org) collects horror stories
Like a puppy
A few scenarios where Excel is
not optimal and alternatives
Setting 9 on machine A was wrong!
Supposed to be 20 instead of 24
Can we fix it?
Sure, we can filter, but is there a
better way?
There is some duplication going on here
Limitations of spreadsheets
* Updating non-normalized data
- A solution is: normalize first
- Another is: use a database
Loads and loads of data
Loads and loads of data
24 hours, 1 measurement a second,
15 machines >> Excel row limit
Limitations of spreadsheets
* Updating non-normalized data
- A solution is: normalize first
- Another is: use a database
* Handling millions of records
Limitations of spreadsheets
* Updating non-normalized data
- A solution is: normalize first
- Another is: use a database
* Handling millions of records
- Use a BI tool, database or program
Limitations of spreadsheets
* Updating non-normalized data
- A solution is: normalize first
- Another is: use a database
* Handling millions of records
- Use a BI tool, database or program
* Complex data analysis
- Use scientific tools