Table 2. Minimum difference in Employment Cost Index (ECI) percent changes required for statistical significance at the 10-percent confidence level

Table 2. Minimum difference in Employment Cost Index (ECI) percent changes required for statistical significance at the 10-percent confidence level
Standard error of first ECI percent change	Standard error of second ECI percent change
Standard error of first ECI percent change	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9
0.2	0.5	0.6	0.7	0.9	1.0	1.2	1.4	1.5
0.3		0.7	0.8	1.0	1.1	1.3	1.4	1.6
0.4			0.9	1.1	1.2	1.3	1.5	1.6
0.5				1.2	1.3	1.4	1.6	1.7
0.6					1.4	1.5	1.6	1.8
0.7						1.6	1.7	1.9
0.8							1.9	2.0
0.9								2.1
Note: The significance level shows the probability that sampling error alone will cause the difference between the estimates for the two values to be at least as large as the number in the table, even if the two values are, in fact, the same in the population.