Is this missing at random?
You've seen in the video exercise how there are a variety of missingness types when observing missing data. As a reminder, missingness types can be described as the following:
- Missing Completely at Random: No systematic relationship between a column's missing values and other or own values.
- Missing at Random: There is a systematic relationship between a column's missing values and other observed values.
- Missing not at Random: There is a systematic relationship between a column's missing values and unobserved values.
You have a DataFrame containing customer satisfaction scores for a service. What type of missingness is the following?
A customer satisfaction_score
column with missing values for highly dissatisfied customers.
This exercise is part of the course
Cleaning Data in Python
Hands-on interactive exercise
Turn theory into action with one of our interactive exercises
