1 files changed, 51 insertions, 0 deletions
diff --git a/3830/CH1/EX1.31/Ex1_31.sce b/3830/CH1/EX1.31/Ex1_31.sce
new file mode 100644
index 000000000..d1af1d43c
--- /dev/null
+++ b/3830/CH1/EX1.31/Ex1_31.sce
@@ -0,0 +1,51 @@
+// Exa 1.31
+
+clc;
+clear;
+
+// Given
+
+// Various Current Measurements
+
+I1 = 41.7; // First reading in A
+I2 = 42; // second reading in A
+I3 = 41.8; // third reading in A
+I4 = 42; // fourth reading in A
+I5 = 42.1; // Fifth reading in A
+I6 = 41.9; // sixth reading in A
+I7 = 42; // seventh reading in A
+I8 = 41.9; // eight reading in A
+I9 = 42.5; // nineth reading in A
+I10 = 41.8; // tenth reading in A
+n=10; // Total no of observations
+I = [41.7;42;41.8;42;42.1;41.9;42;41.9;42.5;41.8];
+
+// Solution
+
+AM = (I1+I2+I3+I4+I5+I6+I7+I8+I9+I10)/n;
+printf('The arithmatic mean = %.4f A \n',AM);
+
+// Deviation for each reading will be -
+d1 = I1 - AM; // deviation for 1st reading
+d2 = I2 - AM; // deviation for 2nd reading
+d3 = I3 - AM; // deviation for 3rd reading
+d4 = I4 - AM; // deviation for 4th reading
+d5 = I5 - AM; // deviation for 5th reading
+d6 = I6 - AM; // deviation for 6th reading
+d7 = I7 - AM; // deviation for 7th reading
+d8 = I8 - AM; // deviation for 8th reading
+d9 = I9 - AM; // deviation for 9th reading
+d10 = I10 - AM; // deviation for 10th reading
+
+SD = sqrt((d1^2+d2^2+d3^2+d4^2+d5^2+d6^2+d7^2+d8^2+d9^2+d10^2)/(n-1));
+printf(' The standard deviation = %.3f A \n',SD);
+
+Y = 0.6745*SD;
+printf(' Probable error of one reading = %.3f A \n',Y);
+Vm = Y/sqrt(n-1);
+printf(' Probable error of mean = %.3f A \n',Vm);
+
+
+printf(' Range = %.1f A \n',max(I)-min(I));
+
+// The answers vary due to round off error