* UNIVERSITY OF
FLORIDA
Food and Resource Economics Department McCarty Hall
Institute of Food and Agricultural Sciences PO Box 110240
Gainesville FL 326110240
Fax (904) 3923646
Bitnet: PEH@IFASGNV
Internet: PEH@GNV.IFAS.UFL.EDU
Fax : 904 392 8634
Phone: 904 392 5830
MEMORANDUM
TO: Van Crowder
Charles Reid
FROM: Peter Hildebrand
DATE. July 12, 1993
SUBJECT: Coffee establishment data

Enclosed is a MSA of the coffee establishment data that Charles
gave me to bring back here. Several items are important to note.
First, the printout of the spreadsheet will show what I have
done. The graphs are included in the file and can be pulled up.
Brad will know what all of this means and can teach anyone there
who wants to learn about it.
Second, the data were not in very good shape (to put it mildly).
You definitely need to work on making sure the data are usable.
For example, there are a number.of notations on the data sheets
given me which are not described. Many data are missing.
Treatments are not in the same order. They should probably all
be in order from one to four. Apparently not all trees were
measured all the time. I would strongly urge you to measure
every tree every time. As I suggest in my report, you should
make every effort to get all the data immediately onto a computer
file. There should only be one transfer of data  from the
field record to the computer. Each time the data are
transferred, there is room for error.
Third, I believe it is necessary to analyze differences in height
and/or girth. That is, growth should be analyzed rather than
real girth or height. I imagine, as you have done, that only
girth is necessary because of the correlation you have found
between the two.
An Equal Opportunity/Affirmative Action Institution
The range of data in the set I analyzed is very narrow. I would
not put any confidence in the results. You can learn from the
results how to do the analysis, but not what it means.
It appears to me that
collection procedures
research is reflected
research is the data.
conclusions cannot be
you must be more rigorous in your data
to make sure that the full value of the
in the product  the first product of
If they are no good, the analysis and the
any good either.
To help you analyze the good data I know you will be getting in
the future, I am enclosing in addition three copies of the guide
I wrote to help with MSA. I hope you find it useful.
Also enclosed is a disc with the data, analyses and graphs on it.
Good luck.
BOl/j'caltr
JAMAICA COFFEE ESTABLISHMENT TRIAL. VINCENT LOGAN
HEIGHT, TIME PERIOD TWO
BLK(ENV) TREE # TI
I 1 40
4 46
9 51
10 62
II 1. 18
4 38
9 38
10 29
II 1 64
4 62
9 57
10 55
IV 1 42
4 33
9 40
10 42
T2 T3
53 20
33 46
34 20
30 32
36 46
34 28
39 32
35 46
48 34
28 31
32 56
35 49
38 31
60 46
48 47
49 53
T4 El
33 36.5
46 42.75
40 38.5
42 41.5
54 38.5
38 34.5
46 38.75
47 39.25
34 45
43 41
38 45.75
36 43.75
55 41.5
50 47.25
55 47.5
43 46.75
JAMAICA COFFEE ESTABLISHMENT TRIAL. VINCENT LOGAN ESTIMATED HEIGHT = f(E)
HEIGHT, TIME PERIOD TWO
BLK(ENV) TI T2 T3 T4 El T1 T2 T3 T4
II 30.75 36 38 40.25 37.75 30.2193 34.78514 34.4549 42.54066
1 49.75 37.5 31.75 40.25 39.8125 42.06989 37.18808 36.83503 43.157
II 50. 35.75 42.5 37.75 43.875 47 68468 41.92114 41.52316 44.37101
IV 30.25 48.75 44.25 50.75 45.75 50.27613 44.10563 ,43.68691 44.93133
T1 Regression Output
Constant
Sid Err of Y Et
R Squared
No. of Obervations
Degrees of Freedom
X Coefficent(s) 1.382104
Sd Err of Coef. 2.206106
T2 Regrsslon Output
12.951 Constant
13.804 Sd Errof YEat
0.16051 R Squared
4 No.of Observatons
2 Degrees of Freedom
X Coefficient(s) 1.165062
Sd Err of Cof. 0.871993
T3 Regression Output:
9.19594 Constant
5.53216 Std Err of Y Est
0.471617 R Squared
4 No. of Observations
2 Degrees of Freedom
X Coefficient(s) 1.154001
St Err of Coef. 0.702135
T4 Regression Output
9.10864 Constant
4.455139 Std Err of Y Est
0.574585 R Squared
4 No.of Observations
2 Degrees of Freedom
X Coefficient(s) 0.298833
Std Err of Coe. 1.113876
39.5 30.125 43.75 41.79688
GIRTH, TIME PERIOD TWO
1 2
4 2.7
9 2.5
10 2.0
1 1.6
4 1.5
9 1.5
10 1.3
1 3
4 3.1
9 3.1
10 3
1 1.3
4 1.5
2.1 1.1
1.5 2
1.4 1.1
1.5 1.9
1.6 2
1.1 1.1
2 19
1.5 2
1.5 1.0
1.8 2.5
1.5 2.
1.6 1.9
1.4 1.5
2.5 1.8
2 1.8
2 2.05
2.9 1.9
14 1.95
3.1 2.075
1.5 1.3
2.1 1.875
2 1.7
1.1 1.8
15 2.225
1.5 2.175
1.8 2.075
2.7 1.725
2 1.95
JAMAICA COFFEE ESTABLISHMENT TRIAL, VINCENT LOGAN ESTIMATED GIRTH = f(EI)
GIRTH, TIME PERIOD TWO
BLK(ENV) TI T2 T3 T4 El TI T2 T3 T4
II 1.475 1.5 1.75 2.175 1.7375 1550178 1.538986 1.618027 2.242800
I 8.45 1.525 1.525 2.1 1.925 2.105358 1.732281 1.836247 2.026114
IV 1.5 .225 2 2.275 2.0375 2.438467 1.848259 1.967178 1.86096
III 3.05 1.0 2.15 1.475 2.06875 2.530907 1.880475 2003546 1.85998
Ti Regreselon Output
Constant
Sd Err of Y Est
R Squared
No. of Observations
Degrees of Freedom
X Coefficient(s) 2960964
Std Err of Coaf. 2.740807
T2 Regression Output
34.45 Constant
0.712557 Sd Err of Y Est
0.67491 R Squared
4 No. of Observations
2 Degrees of Freedom
X Coefficient(s) 1.03091
Std Err of Coef. 1313571
Ta Regression Output
0.25222 Constant
0.340757 Std Err of Y Est
0.235455 R Squared
4 No. of Observations
2 Degrees of Freedom
X Coefficient(s) 1.163837
Std Err of Coae. 1.008239
T4 Regression Output
0.40414 Constant
0.26155 Std Err of Y Est
0.399845 R Squared
4 No. of Observations
2 Degrees of Freedom
X Coefficient(s) 1.15571
Std Err of Coef. 1.497541
AVG 44.8125
31.2597
7.067696
0.034738
4
2
4.250856
0.388481
0.229459
4
2
JAMAICA COFFEE ESTABLISHMENT
V. LOGAN, SECOND PERIOD
52
50... ................................ .... ..... T
46 ......................................... ....... ..T
/ 4       =. === *"" "*  * " ::: *
4 I ... ................. . ............... ........... .... .. ... . ..."umn .... . ..... .....
4. ......... .......... T4
4 2            :;:II
... . ........ ...
38..... .
42.............................. .......
40 ........... ...... .................... ................... . . ... ................................... .
36.................................................
3 4 I ,, I I I
37 41 45
ENVIRONMENTAL INDEX, El
JAMAICA COFFEE ESTABLISHMENT
V. LOGAN, SECOND PERIOD
2.6
2 .5 .............................................................................................................................................................................................................. ...................... T 1
2.4 ......................................................
T2
2.3
2 ...................................... .............. .................................
2. .................... ....... ........ ............................
1 .......... ...... .................
2......................... ...........
1 ....................... ...... ........ ........
1.5
1.5
1.7 1.9 2.1
ENVIRONMENTAL INDEX, El
