Question

What is the probability for each sample that a rope is outside 2 standard deviations (above or below) the sample mean?

											Mean	Median	Mode	Standard Dev	Coefficient of Variation/Covariance
Sample 1	83.77	84.05	83.88	83.94	84.01	84.03	84.06	84.07	84.09	84.11	84.001	84.04	#N/A	0.1070	0.12740972
Sample 2	84.01	84.09	83.98	83.95	83.92	83.85	83.82	83.83	83.87	83.88	83.92	83.9	#N/A	0.0873	0.10403401

Answer 1

for sample 1 ; 2 std deviation away values from mean =84.001-/+2*0.1070=83.7870 to 84.2150

values outside this interval is 83.77

hence probability=1/10 =0.1

for sample 2    2 std deviation away values from mean =83.92-/+2*0.0873=83.7454 to 84.0946

values outside this interval are 0

hence probability=0/10 =0.0