Five Tips to Improve your Binary Classification Modeling

Note: I believe it should be free and readily available for…

Q#82: Student GPA

Provided the following tables, write a SQL query to pull the average GPA (grade_point in table) by subject for completed…

Q#80: Total grocery sales in SQL

You are given the below tables, showing Store, Product, and Sales information for a chain of grocery…

Q#76: Reddit comment activity

Suppose you’re working for Reddit as an analyst. Reddit is trying to optimize its server allocation per…

Q#88: Filtering strings in Pandas dataframes

Given the following dataframe, write code using Python (Pandas) to return the rows…

Q#97: Large numbers in a raffle

Note: I believe it should be free and readily available for everyone to gain value from data, hence I…

Q#78: Choosing two ice creams

Suppose you enter an ice cream store. They sell two types of ice cream: soft serve and frozen yogurt…

Q#93: Call conversions

Note: I believe it should be free and readily available for everyone to gain value from data, hence I pledge to keep…

Q#73: Categorizing foods

You are given the following dataframe and are asked to categorize each food into 1 of 3 categories: meat, fruit, or…