Z score in disarray already

According to Professor R O Thatil, the Z score on A/L this year (2012) is in disarray already.

He says this is due to the marks obtainable on the question papers with errors found in the examination just over.

According to Mr Thatil this error cannot be rectified by giving marks to the student who avoided the wrong question as well as the student who answered the wrong question.  The Z score will be affected at both these instances he says.

The Professor said that the big difference of marks where the question paper was rectified and where it was not rectified will aggravate the situation.

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