Challenge No. 106: Rank the countries based on Olympic medals, starting with the number of gold medals.
Solved using:Excel, Power Query, Python, and R.
By Software
Solutions categorized by software used.
Characters Repetition!
Challenge No. 105: In the question table, where some passwords are provided, extract the 6 most commonly used characters across all the passwords and count their repetitions.
Solved using:Excel (CONCAT, FILTER, GROUPBY), Google Sheets, Power Query (List.Combine, List.Distinct, List.Transform), Python, Python in Excel, and R.
Simuilation!
Challenge No. 104: Monte Carlo simulation is a technique used to predict the outcome of decisions by simulating a process multiple times.
Solved using:Excel, Power Query, Python, Python in Excel, and R.
Custom Average!
Challenge No. 103: Today is 20/08/2024, and we’re calculating the average delivery time per product in days.
Solved using:Excel (AVERAGE, CHOOSECOLS, FILTER), Google Sheets, Power Query (Table.AddColumn, Table.Group), Python, Python in Excel, and R.
Compare Rows! Part 1
Challenge No. 102: In the historical sales table, identify and extract the dates where the sales value on that date is greater than the sales on the previous date.
Solved using:Excel (DROP, FILTER, IF), Google Sheets, Power Query (Table.AddColumn, Table.AddIndexColumn, Table.SelectColumns), Python, Python in Excel, R, and VBA.
Duplicate Values! Part 1
Challenge No. 100: Consider the IDs in the question table.
Solved using:Excel (CHAR, COUNTIF, COUNTIFS), Google Sheets, Power Query (List.Transform, Table.AddColumn, Table.Group), Python, Python in Excel, and R.
Random Selection! Part 2
Challenge No. 99: Randomly select 4 unique staff members using the following procedure:
1- Randomly select a department out of 5 departments with equal probability.
Solved using:Excel, Power Query, and R.
Data Cleaning! Part 1
Challenge No. 98: In the Question table, historical sales values are provided in a single cell, including the Date, Product Name, and Quantity, but in a disorganized order.
Solved using:Excel (FILTER, HSTACK, IF), Google Sheets, Power Query (List.Transform, Text.Contains, Text.Split), Python, Python in Excel, and R.
Linear Interpolation!
Challenge No. 97: In the question table, the population data for cities A, B, and C are provided for different years.
Solved using:Excel, Google Sheets, Power Query, Python, Python in Excel, and R.
Top Products!
Challenge No. 96: In the Question table, daily sales information is provided.
Solved using:Excel, Google Sheets, Power Query, Python, R, and SQL.