why there is a difference in the calculation result

h2 =[0.4000    0.6000    0.8000    1.0000    1.2000    1.4000    1.6000    1.8000];
tsqr =[0.0424    0.0628    0.0834    0.1026    0.1250    0.1452    0.1666    0.1871];

>>h2./tsqr

ans =

      _9.4229_    9.5541    9.5939    9.7494    9.6011    9.6445    9.6038    9.6198

>>0.4000/0.0424

ans =

      9.4340

Answer 1

[Roger Stafford]

There is no reason those quotients should be equal. The quantities h2 and tsqr are not proportional to one another. For one thing the successive differences in h2 appear to all be the same whereas those in tsqr are certainly not the same.

Answer 2

[Walter Roberson]

Your values might not be exactly what was printed out. You should use

format long g

before displaying h2 and tsqr