1. Text Mining & Basic Calculations Supplemental Resources on Class Website

2. Concept Map Big Data Excel Features Implementation Data Mining Yields Business Intelligence Accuracy Design

3. Objectives ▪ Define Big Data and Data Mining ▪ Explain the Accuracy principle of Spreadsheet Design ▪ Demonstrate Excel features that support basic spreadsheet analytics.

4. Facebook Users ▪ 1.28 billion users worldwide ▪ 802 million users login daily (up 21%) ▪ 67% of Internet users are on FB ▪ 50% of 18-24 year olds login when they wake up ▪ 45-54 year old age group has grown 46%

5. Facebook Content ▪ 4.5 billion likes daily (up 67%) ▪ 30 million photos uploaded daily ▪ 1 in 5 page views in US ▪ 36% users post brand-related content on their walls

6. King of Social Media ▪ FB accounts for 66% of social media sharing on iPhones ▪ Users with income over $75,000 Facebook73% Twitter17% Pinterest13%

7. Facebook & e-commerce ▪ 10 million registered small businesses ▪ Drives 26% of referral traffic to e- commerce sites ▪ 20% of shoppers prefer buying thru FB vs. e-commerce website ▪ 58% of businesses see a drop in marketing costs when moving to FB

8. ▪ Data sets too large to process with traditional database technology Big Data

9. Data Mining Tools ▪ software that searches through data ▪ uses complex statistical calculations ▪ outputs ▪ Trends ▪ Patterns ▪ Correlations ▪ Exceptions

10. Nestle ▪ Nestle processes Social Media http://uk.reuters.com/article/video/idUKBRE89P07Q20 121026?videoId=238680321

11. Import ▪ Access data not formatted as an Excel document ▪ File type = txt or csv

12. Import – Step 1 ▪ File, Open, File type = All files http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

13. Import – Step 2 http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

14. Import – Step 3 ▪ Save As File type = Excel Worksheet http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

15. Text Mining ▪ Search ▪ Parse ▪ Concatenate ▪ SEARCH ▪ LEFT, MID, RIGHT, LEN ▪&▪&

16. SEARCH Function http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

17. LEFT Function http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

18. LEN or Length Function http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

19. RIGHT Function http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

20. MID Function http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

21. Concatenate ▪ & is the concatenate symbol ▪ Quotes are required around constant strings of text http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

22. Relative Cell Addressing ▪ Relative is the default ▪ When you copy a relative cell reference the reference will change depending on the direction and magnitude of the copy.

23. Copy Formula with Relative Cell Addresses

24. ▪ Formula ▪ created by you ▪ = A1 + A10 ▪ Function ▪ keyword defined by Microsoft ▪ =SUM(A1:D1) ▪ Functions are more flexible than formulas Formula vs. Function

25. Different Results =B3+B4+B5+B6 =SUM(C3:C6) If you delete Row 5 =SUM(C3:C5)

26. ▪ SUM ▪ AVERAGE ▪ MIN and MAX ▪ COUNT Common Functions

27. Cell AddressReferenceChanges when Copied A1RelativeVertically or Horizontally $A$1AbsoluteNever $A1MixedVertically A$1MixedHorizontally

28. ▪ Is the formula entered going to be copied? ▪ If so, which direction? ▪ If it’s copied vertically, do you want the row references to change? If it’s copied horizontally, do you want the column references to change? ▪ Do you want such a change to take place? Cell Reference Decisions

29. http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html

30. 1.Will you copy this function? 2.If so, which direction: vertical or horizontal? 3.If you copy vertically, Excel will automatically change all relative row references. Do you want those row references to change? Cell Reference Example #1 = SUM(B2:D2 )

31. Cell Reference Example #2 ▪ Which calculation needs a mixed cell reference? ▪ Where should the $ go?

32. ▪ Know the order of operations. ▪ Select the correct function or construct the correct formula. (Choose a function over a formula.) ▪ Isolate assumptions. ▪ Check relative and absolute cell references. ▪ Double-check all calculations. Spreadsheet Design: Accuracy

33. ▪ Store numbers in cells ▪ Write equations to point to cells containing numbers Isolate Assumptions

34. Isolate Assumption Example Assumption =E2+3 is incorrect =E2+H2 is correct

35. Paste Special - Values http://www.lacoste.pamplin.vt.edu/web1504/resources/video/ss.html