Menu

Checking for Missing Values

Checking for Missing Values

Missing values can negatively affect machine learning models.

Before proceeding, we must verify whether the dataset contains incomplete information.

Code

**house_price_df.isnull().sum()**

Explanation

The isnull() function identifies missing entries, while sum() counts them.

In this dataset:

  • No missing values are present.
  • All records are complete.

This simplifies the preprocessing stage because no imputation is required.

Why Missing Value Analysis Matters

In real-world projects, missing values can:

  • Reduce model accuracy
  • Cause training failures
  • Introduce bias

Therefore, checking for missing data is always recommended.