WMOD00464

• Title: The Management of Weather Resources - Volume II
• Prepared For: The Weather Modification Advisory Board
• Date: 6/30/1978
• Weather Modification - Doc Type: Report

- vii -

G. ISSUES OF ANALYSIS ......................................................................................G-1

28. Two-stage randomization ............ ......... .................... ............. .......... .......... ..G-l
restriction of randomization. ........ .......... ........... ........... ................... ...G-l

balanced sets .............. .................... ............ ............... .......... ..... ........ ..G-l
maintaining blindness...................... ................................................. .G- 2

orthogonal arrays ... ... ........ ....................... ........... ........ ... ....... ... ........ ..G-3
rc~lation of arrays to codes.......... ......... ...................... ..... ......... ......... ..G-4

longer" experiments........................................................................... .G-4
maintaining reasonable balance..... ...... .......... ...... ...... ............ ........... ..G-4

29. More about specifications..... ..... .............. ...... ....... .................. ....... ........... ..G-6
change in spread ....... ........ ........... ............. ..................... .................. ..G-6

nuisance parameters........................................................................... G - 7

different models................................................................................. G-7

non-randomness................................................................................ .G-8

returns to scale?...... ...... .............. .................... ........... ....................... .G-8

30. What do we want to assess? .......................................................................G-8
overwhelming instances ...... ........... ........ ...... ....... ......... .................... ..G-8
high sensitivity............... ................ ........... ....................................... ..G-9

31. Availalbility of multiple guidance ..............................................................G-lO

32. Use of covariates ..... ....... ......... ................... ............................................ ..G- 11

fixed adjustment............................................................................... G- I 2
data-guided adjustments... ............ ........ ........... ...................... ......... ..G- I 2
dummy variates..... ........ ................ ............................. ..................... .G-t3

validity.................... ...... ..... ...... ................ ................ ....................... .G-l3

many coefficients............................................................................ ..G-l3

33. Issues of multiplicity ............................................................................. ....G-l5

34. Adjusted randomization analysis...................................... ..................... ....G-l5

35. Treatnlent of zeros. .......... ........ .............. ...... ........................................... .G-l6

36. Combination of experimental results............................... .........................G-17

37. Graphical presentation. .......... ....... ...... ......... ............ ............. ...... ...... ..... ...G-17
H. SUPPORT FOR THE EVALUATIONS OF SECTIONS 11 and 28 ....................H-l

38. Distributional results ...... ............. .............................................................. .H-l
order-statistics of 4 from the uniform ...............................................H-l

39. Examination of parallel specifications .......... ..... ....... ................ ...... ........... ..H-l

40. The chance that one out of r independent experiments
will reach 5% by pure chance......................................................................H-2

41. North Dakota...... .............. .......... ................. ................. ............................ ..H-3

42. Santa lBarbara II ... ..... ....... ............. ................. ........................................... ..H-3

initial analysis... ........ ............ .,. ...... ........ ..... ... ........................... ......... ..H-3

Elliott and Brown analysis ... .............. ... ....... ..... ........... ............ ........ ...H-4

Serfling analysis................................................................................. .H-4

overall..................... .,.......................................................................... H- 5

43. Tasmania..................................................................................................... H:- 5

44. Controlling unbalance.... ............. .............................................................. ..H-5
single sequences. ................ ............................................................... .BI-S
orthogonal arrays........................... .................................................... ..H-S
complete orthogonal arrays..................... ......................................... ..H-8
weeded orthogonal arrays............. ............................. ........................ .H-8