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Module 6

Handling missing values with pandas

7 / 12

Cell ran in 0.42s, 2 of 2 checks passed

Louis Tajanlangit 07:51 AM

My checks pass, but the mean of the column changed after this line:

df["lot_frontage"].fillna(median)

Did I fill it the wrong way?

DataSensei Assistant

No, that shift is expected. You replaced 259 missing values with the median, so the mean moves a little while the median stays where it was:

Filling with mean() instead would pull the column toward the outliers. Step 8 asks you to compare both.

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