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Advantages and Disadvantages added as in Video #4

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Advantages and Disadvantages added as in Video #4

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rsankarpollachi
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Advantages

  1. Easy to implement
  2. Captures the importance of missingess if there is one

Dsiadvantages

  1. Distorts the original distribution of the variale
  2. If missingess is not importrant, it may mask the predictive power of the original variable by distorting its distribution
  3. if the number of NA is big, it will mask the true outliers in the distribution
  4. if the number of NA is small, the replaced NA may be considered an outlier and pre-processed in a subsequent feature engineering

@rsankarpollachi
Advantages and Disadvantages added as in Video
ddace8e 
### Advantages
1. Easy to implement
2. Captures the importance of missingess if there is one

### Dsiadvantages
1. Distorts the original distribution of the variale
2. If missingess is not importrant, it may mask the predictive power of the original variable by distorting its distribution
3. if the number of NA is big, it will mask the true outliers in the distribution
4. if the number of NA is small, the replaced NA may be considered an outlier and pre-processed in a subsequent feature engineering
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