Thread: Newton interpolation - Answer mismatch

Hi,

I am trying to solve this question but always my answer is mismatching with the answer written in the book. Can anyone help to solve this question so that i can verify the answer.

Q: From the table(shown below), using the newton interpolation formula, estimate the number of students who abtained marks between 80 - 85
...........................____________________________________
Marks ..................| 40 - 50 | 50 - 60 | 60 - 70 | 70 - 80 | 80 - 90|
No. of Students......|....40....|.....78....|.....10...|.....3......|....19...|
...........................-----------------------------------------------


Need help asap.

Thanks in advance
Lalit Chugh