i

Yi

1

0.020

0.0204

+0.0004

0.00000016

2

0.025

0.0249

−0.0001

0.00000001

3

0.032

0.0294

−0.0026

0.00000676

4

0.030

0.0339

+0.0039

0.00001521

5

0.040

0.0384

−0.0016

0.00000256

Total

0.00002470