1. BI and data quality
Stefano Grazioli

2. Critical Thinking
Bug bounty
Easy Meter

3. You do the talking Name, major Learning objectives
Things you like about the class
Things that can be improved
Attitude towards the Tournament

4. Homework
Google’s Daily Cagr

5. Daily Cagr for Google You are an analyst at a broker firm.
Many of our customers invest for short amounts of time on Google. They sell their shares within a few weeks…. I wonder: do they make any money out of it?

6. UML Activity Diagram - Daily Compound Average Growth of a Security (part II)
Select the next column that has dates
When the user presses a button, a file selection windows pops out. The user selects a file. The file is shown starting at “A1”. The start button becomes invisible. Three more buttons appear: “Clean phone numbers”, “Format Dates”, and “Compute Daily CAGR”.
Select the next item
[No More items in this column]
[is a date]
Highlight the cell in yellow
Format as mm/dd/yyyy & clear highlight if any A
[Compute] B
[Format Dates]
[Clean ph.no] A
[No more columns]
Select the next phone no. Count its digits B
The user press the Compute Cagr button
[Exactly 10 digits]
Compute the Cagr for the next customer
[(final price/initial price)^1/days ]-1
Highlight the cell in red
Format as (xxx)-xxx-xxxx
& clear highlight if any
Print the Average of all Cagrs at the bottom of the Cagr column with a descriptive label.
Print the result for that customer. In red if it is zero or negative.
[No More Customers] A
[No More Ph.No]

7. Suggestions
Video available
Give yourself plenty of time

8. WINIT
What Is New In Technology?

9. Dates

10. Dates MyDate Year 2002 Month 11 Day 14 Week 45 .... ...
Dim myDate As Date = "11/14/2002“
myDate.Year
myDate.Month
myDate.Day
myDate.DayOfWeek
myDate.DayOfYear
...
MyDate
Year
2002
Month 11
Day 14
Week 45
....
...

11. A TimeSpan represents the elapsed time between two dates.
Dim myDate1 As Date
Dim myDate2 As Date
Dim myTS As TimeSpan
myDate1 = Range("A1").Value
myDate2 = Range("A2").Value
myTS = myDate2 - myDate1
Range("A3").Value = myTS.Days
A TimeSpan represents the elapsed time between two dates.
Date1
Date2
TIMESPAN

12. TimeSpan mySpan.Days gives you the total number of days
mySpan.TotalDays
gives you the total number of days, plus a fraction of day based on the hours

13. Cagr = compound average growth rate - calculated daily
[(final price/initial price)^(1/days)]-1