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19. Avg Apple Sign-up Gap
easy
Applesenior
What is the average number of days between consecutive Apple user sign-ups, ordering all sign-ups by joined_dt in ascending order? Return a single value named avg_days_between_signups, rounded to 2 decimal places.
apple_users
| Column Name | Type |
|---|---|
| user_id | int64 |
| first_name | object |
| last_name | object |
| object | |
| country | object |
| joined_dt | object |
Expected Output Schema
| Column Name | Type |
|---|---|
| avg_days_between_signups | float64 |
Constraints
Return single value column avg_days_between_signups.
Order by joined_dt ascending before diff.
Round result to 2 decimal places.
Hint 1
Sort the sign-ups by joined_dt ascending before comparing consecutive rows.
Hint 2
Use a windowed difference (e.g., diff() / LAG) to compute the gap from each row to the previous signup date.
Hint 3
Convert the time delta to days, ignore the first NULL/NaN gap, then take the mean and round to 2 decimals as avg_days_between_signups.
Roles
Data Scientist
Data Analyst
Data Engineer
Companies
AppleLevels
senior
entry
Tags
pandas
datetime
sorting
diff
aggregation
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Python EditorLn 1, Col 1