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Table 1 Summary statistics for variables included in the Stochastic frontier production and technical inefficiency models for cage culture

From: A stochastic frontier analysis of technical efficiency of fish cage culture in Peninsular Malaysia

Variable name Definition Measurement Summary statistics
Mean SD Min Max
Output and input variables    
 Y Cage fish production per cycle (kg m−2) 9.4 27.5 0.02 232
 X1 Fish fry (pieces m−2) 48.8 109.8 0.29 619
 X2 Feed (kg m−2) 58.6 211.9 0.03 1332
 X3 Labour (own and hired) (days m−2) 1.8 3.2 0.02 21.3
 X4 Energy (fuel) (litre m−2) 19.2 42.3 0.00 241.9
 X5 Utility (operational) (USD m−2) 6.9 10.8 0.00 68.8
 X6 Others (maintenance) (USD m−2) 0.5 0.6 0.00 3.1
Farm specific variables
 Z1 Age (year) 48 11 28 78
 Z2 Education (year) 8 4 0 19
 Z3 Experience (year) 7 7 1 33
 Z4 Production cycle (number) 1.7 0.88 1 5.5
 Z5 Cage area (m−2) 1127 1847 36 11,250