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+// Scilab code Exa4.9 : : Page-180 (2011)
+clc; clear;
+N_A = 1000;        // Number of count observed for radiation A
+N_B = 2000;        // Number of count observed for radiation B
+r = N_A/N_B;        // Ratio of count A to the count B
+E_r = sqrt(1/N_A+1/N_B);        // Statistical error 
+printf("\nThe statistical error of the measured ratio = %4.2f", E_r*r);
+
+// Result
+// The statistical error of the measured ratio = 0.02 (Wrong answer in the textbook)
+\ No newline at end of file