OECD (Gross savings, 1968-1996. N = 24, T = 29, NT = 696)

No. of Factors

Confidence interval

a ^

z ^ 0

Sample estimate

1

(2.081594, 10.27890)

−0.006873

0.071081

4.974677

2

(1.638099, 7.703148)

−0.008299

−0.003342

3.880169

3

(1.394734, 6.145656)

−0.001905

0.000000

3.091902

4

(1.241679, 4.535246)

0.007250

0.010862

2.398888

5

(1.169084, 3.140490)

−0.020911

−0.015040

1.948178

6

(1.119221, 2.709843)

−0.010070

0.020890

1.678469

7

(1.007950, 2.217862)

−0.006747

0.037608

1.424647

8

(0.939955, 1.613086)

0.000393

0.019219

1.182025

9

(0.989175, 1.133596)

0.049669

0.032592

1.038391

10

(0.978285, 1.015768)

0.004175

0.04848

0.999687

OECD (Gross savings, 1997-2015. N = 29, T = 19, NT = 551)

No. of Factors

Confidence interval

a ^

z ^ 0

Sample estimate

1

(7.608795 × 106, 6.0377075 × 107)

0.078859

0.057684

2.0034572 × 107

2

(3.797731 × 106, 3.0247282 × 107)

0.092630

0.037608

1.0315223 × 107

3

(2.481613 × 106, 2.2272173 × 107)

0.057542

0.032592

7.288879 × 106

4

(2.567306 × 106, 2.2419446 × 107)

0.078350

0.039281

7.242831 × 106

5

(6.624862 × 105, 6.137134 × 106)

0.069541

0.056011

1.832864 × 106

6

(2.567277 × 105, 2.386353 × 106)

0.066892

0.074432

7.258172 × 105

7

(2.41737 × 105, 2.112010 × 106)

0.063245

0.081975

6.956297 × 105

8

(1.622738 × 105, 1.319951 × 106)

0.049357

0.027576

4.606748 × 105

9

(1.879429 × 105, 1.450162 × 106)

0.060226

0.064381

4.850213 × 105

10

(1.464657 × 104, 8.333579 × 104)

0.065406

0.057684

3.618402 × 104