Answer / sattwik panda

There are two types of numeric missing values:
1. Numeric missing value which is represented by a period(.)
2. Special numeric missing value(such as ._, .A, or .Z)

The order of precedence for numeric values are in the order
1. ._
2. .
3. .A through .Z

If we sort the dataset which has all of the above possible values, then the highest missing value will be .Z .

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