A brief description is given of a program to carry out analysis of variance two-way classification on MICRO 2200, for use in fishery data processing

Kesavan Nair, A.K.

Aquatic Commons

63 
rogramme to arry out nalysis of Variance~ 
Two"' way lassification on M I 2200 
Studies on fishing gear and fish processing 
require statistical computations at some 
stage or the other. Analysis of variance 
has found wide application in thi& regard 
(Pillai et a!. 1979; Thampuran et a!. 1981 
and Nair, 1982). For the calculation invol-
ving this technique much time and effort 
can be considerably saved by employing 
ready made programmes on micro compu-
ters. Hindustan Computers Limited (1977) 
supplies about 20 meful programmes 
in a cyclostyled manual entitled "Software 
Application for MICRO 2200". This does 
not include a programme on analysis of 
variance (ANOVA) for the general case. 
On request, the author received programme 
steps for ANOV A of two treatments from 
Shri Saminathan, Hindustan Computers Ltd. 
The present programme gives ANOV A for 
the general case, that is, for p-treatments, 
p, varying between 2 and 83 on MICRO 
2200 of Hindustan Computers. It is possible 
to use this programme on other micro com-
puters featuring conversational language 
and having corresponding keys equivalent 
to those given in the programme steps. 
The formulae used to compute the various 
sums of squares relevant to ANOV A of 
two-way classification are those given by 
Snedecor & Cochran (1968). 
The programme accepts nxp data, and 
was written specially for randomised block 
designs with 'p' treatments and 'n' blocks. 
274 programme steps, (17 +p) data registers, 
3 index registers and 2 labels were used for 
the programme. 
The programme: Analysis of variance - two way classification 
Step No. Key Step No. Key Step No. Key 
0000 HLT 0026 SPACE 0051 0 
0001 0027 0 0052 1 
0002 A 0028 STX 0053 MEM 
0003 9 0029 1 0054 0 
0004 PRINT (DL01) 0055 9 
0005 0030 HLT 
0006 1 0031 MFN 0056 8 
0007 
-
0032 0 0057 X 
0008 B 0033 9 0058 
-
0009 9 0034 8 0059 MFN 
0010 STX 0035 PRINT 0060 0 
0011 0 0036 MFN 0061 9 
0012 HLT 0037 IND 0062 5 
0013 PRINT 0038 1 0063 0 
0014 
-
0039 X 0064 
-
0015 A 0040 
-
0065 A 
0016 6 0041 MFN 0066 8 
0017 0042 0 0067 A 
0018 1 0043 9 0068 9 
0019 0044 7 0069 
0020 B 0045 INX 0070 1 
0021 7 0046 1 0071 
0022 STX 0047 DEX 0072 STX 
0023 2 0048 0 0073 0 
0024 SLV 0049 GTO 0074 0 
0025 8 0050 L 0075 STX 
Vol. 20, 1983 
A. K. KESA VAN NAIR 
Step No. Key Step No. Key Step No. Key 
0076 1 0129 SLV 0183 
-:-
0077 DEX 0130 8 0184 B 
0078 2 0131 SPACE 0185 9 
0079 GTO 0132 A 0186 
0080 L 0133 4 0187 B 
0081 0 0134 X 0188 6 
0082 1 0135 
-
0189 PRINT 
0083 SLV 0136 0190 SLV 
0084 8 0137 A 0191 8 
0085 SPACE 0138 9 0192 A 
0086 SLV 0139 .. 0193 5 
0087 8 0140 A 0194 
0088 SLV 0141 6 0195 A 
0089 8 0142 0196 9 
0090 0 0143 A 0197 
0091 STX 0144 2 0198 A 
0092 1 0145 0199 2 
0093 A 0146 A 0200 
-
0094 9 0147 7 0201 B 
0095 0148 EX 0202 8 
0096 1 0149 0203 PRINT 
0097 
-
0150 A 0204 B 
0098 STX 0151 1 0205 7 
0099 0 0152 PRINT 0206 PRINT 
(DL02) 0153 A 0207 B 
0100 MEM 0154 9 0208 8 
0101 IND 0155 X 0209 
0102 1 0156 A 0210 B 
0103 MFN 0157 6 0211 7 
0104 0 0158 0212 
0105 9 0159 1 0213 B 
0106 4 0160 0214 5 
0107 X 0161 PRINT 0215 PRINT 
0108 0162 SLV 0216 SLV 
0109 MFN 0163 8 0217 8 
0110 0 0164 MEM 0218 A 
0111 9 0165 0 0219 1 
0112 3 0166 9 0220 
0113 MEM 0167 3 0221 A 
0114 IND 0168 0222 0 
0115 1 0169 A 0223 
0116 + 0170 6 0224 B 
0117 A 0171 0225 8 
0118 6 0172 A 0226 
0119 0173 2 0'227 B 
0120 PRINT 0174 0228 4 
0121 INX 0175 A 0229 PRINT 
0122 1 0176 0 0230 B 
0133 DEX 0177 PRINT 0231 9 
0124 0 0178 B 0232 X 
0125 GTO 0179 9 0233 B 
0126 L 0180 PRINT 0234 7 
0127 0 0181 A 0235 
0128 2 0182 0 0236 PRINT 
FISHERY TECHNOLOGY 
ANOVA PROGRAMME FOR MICRO 2200 
Step No. Key Step No. 
0237 0250 
0238 B 0251 
0239 4 0252 
024-0 EX 0253 
0241 0254 
0242 B 0255 
0243 3 0256 
0244 PRINT 0257 
0245 SLV 0258 
0246 8 0259 
0247 SLV 0260 
0248 8 0261 
0249 0262 
To run the programme, feed, p-value, that 
is the number of treatments (gears) at step 
No. 0000, (when the display is 0001), n-
value (the number of blocks or days) at 
step No. 0012 (when the display is 0013), 
the data Xij in the order X 1 1, X 12 , ...... X 1 p, 
X 21 , X 22 , ...... 22 2 p ......... ,X 111 , •..•.••.. Xnp at 
Step No. 0030 (when the display is 0031). 
The print out is in the crder: the p-treatment 
means (mean catches); the total sum of 
squares, its degrees of freedom (d.f.); the 
treatment sum of squares, its d.f. followed 
by the mean sum of squares (m.s.); the 
block sum of squares, its d.f. followed by 
the m.s., the error sum of squares, its d.f. 
followed by the m.s. and lastly the two 
F-values. The first F-value is for testing 
the difference among the treatment means 
and the second, for testing the difference 
among blocks. 
If logarithmic transformation of the data 
is required as in the case of fish catch, insert 
Cen1nl Institute of Fisheries 
Technology, Cochin-682 029 
Vol. 20, 1983 
65 
Key Step No. Key 
B 0263 PRINT 
6 0264 SLV 
EX 0265 8 
-
0266 SLV 
PRINT 0267 8 
MEM 0268 GOLD 
0 0269 4 
8 0270 GTO 
5 0271 0 
+ 0272 0 
B 0273 0 
3 
-
the keys 'INV' and '1 ox' between steps 0030 
and 0031. 
The author is thankful to Dr. C. C. Panduranga 
Rao, Director and Dr. P. N. Kaul, Scientist S-3 of 
Central Institute of Fisheries Technology, Cochin-
682 029 for encouragement. 
References 
Hindustan Computers Ltd. (1977) MICRO 
2200 Application Software pp. 1.1 to 
20.3, Hindustan Computers Ltd. 
Nair, A. K. K. (1982) Fish. Techno!. 19 
Thampuran, N., Iyer, H. K. & Iye1, K. M. 
(1981) Fish. Techno!. 18, 95 
Pillai, N. S., George, N. A & Nair, A. K. K. 
(1979) Fish. Techno!. 16~ 65 
Snedecor, G. W. & Cochran, W. G. (1968) 
Statistical Methods, 6th eel., The Iowa 
State University Press, U. S. A. 
A. K. KESA VAN NAIR 


A programme to carry out analysis of variance: two-way classification on Micro 2200

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A programme to carry out analysis of variance: two-way classification on Micro 2200

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