BCOR 2205 Exam QUESTIONS AND CORRECT
ANSWERS (VERIFIED AND WELL DETAILED
ANSWERS) LATEST UPDATE 2024/2025
Acquire explore and manipulate data is first step in ML life cycle
True
False - ✔✔False
The foreign key must be unique and non null
True
False - ✔✔False
The three types of dirty data mentioned in class are: inaccurate data, missing data, and
duplicates.
True
False - ✔✔True
The primary key in one table becomes the foreign key in another associated table
True
False - ✔✔True
Examples of target leakage
A) Trying to see if someone will open an account by using account number as feature
B) When predicting if someone applying for an auto loan will default and credit score at
time of application is feature
ANSWERS (VERIFIED AND WELL DETAILED
ANSWERS) LATEST UPDATE 2024/2025
Acquire explore and manipulate data is first step in ML life cycle
True
False - ✔✔False
The foreign key must be unique and non null
True
False - ✔✔False
The three types of dirty data mentioned in class are: inaccurate data, missing data, and
duplicates.
True
False - ✔✔True
The primary key in one table becomes the foreign key in another associated table
True
False - ✔✔True
Examples of target leakage
A) Trying to see if someone will open an account by using account number as feature
B) When predicting if someone applying for an auto loan will default and credit score at
time of application is feature
