Effect of Climate Change on Total Factor Productivity of Rice in Nigeria

It is followed by a comparison of the relationship between the coordinates of rice production point of each DMU and the position of the optimal frontier. [...] The technical efficiency of a DMU is at the highest level if the rice production point of the DMU is just on the frontier, and if the point is within the frontier, then the DMU is characterized by technical inefficiency. [...] The result of the kurtosis of a distribution which measures the peakness (the tallness or flatness) of the series revealed that rice TFP and rice output had kurtosis values of 8.947 and 3.245 respectively. [...] The result of the Jarque-Bera test statistics which measures the difference of the skewness and kurtosis of the series with those from the normal distribution revealed that rice TFP (Jarque-Bera 141.691; P-value <5%) and rice output (Jarque-Bera 9.329; P-value <5%) had abnormal distribution. [...] The result from the study revealed that the plot of the CUSUM stayed within the 5% critical bounds which implies that the parameters of the model do not suffer from any structural instability.