Research Article

Efficiency Comparison of New Adjusted Nonparametric and Parametric Statistics Interval Estimation Methods in the Simple Linear Regression Model

Table 5

The average width of the confidence interval for the independent variable and the error have gamma distributions with mean of 2/2, 2/3, 2/4, 2/5, 4, 6, 8, and 10 and variance of 2/4, 2/9, 2/16, 2/25, 8, 18, 32, and 50; sample sizes are 10, 30, 50, 70, 100, and 200.

nVarianceAverage width of confidence interval
LSBSJKTOTATSSLSBSJKTOTATSS

102/41.3101.5971.597
2/91.5971.597
2/161.7611.5971.597
2/251.4611.5971.597
81.5971.597
181.5971.597
321.5971.597
501.5971.597
302/41.1651.217
2/91.217
2/161.217
2/251.217
81.1661.217
181.1661.217
321.1661.217
501.1661.217
502/40.6430.651
2/90.6430.651
2/160.651
2/250.651
80.6430.651
180.6430.651
320.6430.651
500.6430.651
702/40.4810.497
2/90.4810.497
2/160.497
2/250.4810.497
80.4810.497
180.4810.497
320.4810.497
500.4810.497
1002/40.3630.3730.3740.373
2/90.3630.3730.3740.373
2/160.3630.3730.3740.373
2/250.3630.3730.3740.373
80.3630.3730.3740.373
180.3630.3730.3740.373
320.3630.3730.3740.373
500.3630.3730.3740.373
2002/40.212
2/90.212
2/160.212
2/250.212
80.212
180.212
320.212
500.212

Note: the bolded value refers to the average width of the narrowest confidence interval, and the underlined value means that the average width of the confidence interval cannot be calculated because the coefficient of confidence interval is not within the specified range.