Interpret the Gini Coefficient:

Gini Coefficient Interpreter

Gini Coefficient Interpreter

Enter a country's Gini Coefficient (between 0 and 1 or 0 and 100):

Gini Coefficient:

HHI Calculator:

HHI Calculator

Herfindahl-Hirschman Index (HHI) Calculator

Enter the market share (%) for each firm (up to 8 firms):

Firm 1: %
Firm 2: %
Firm 3: %
Firm 4: %
Firm 5: %
Firm 6: %
Firm 7: %
Firm 8: %

Income Elasticity of Demand Calculator:

Income Elasticity of Demand Calculator

Income Elasticity of Demand Calculator

Price Elasticity of Demand Calculator:

Price Elasticity of Demand Calculator

Price Elasticity of Demand Calculator

Using AI to test yourself on my notes

It is now possible to use AI to test yourself on almost any topic. Follow these simple steps to generate a set of useful questions, then have them corrected by AI:

  1. Copy the set of notes you wish to revise, then paste them into a Word document.
  2. Convert this Word doc to a PDF and download it to your device.
  3. Open ChatGPT and type the following prompt: I need twenty short questions on this material for a teacher who asks quite difficult questions. Then attach the PDF you just created to your conversation. ChatGPT will now produce a set of questions for you to answer.
  4. Open a second Word document and answer the questions given to you by ChatGPT.
  5. When you're finished, convert your answer-document into a PDF and again download this to your device.
  6. Using the same conversation in ChatGPT, type in the following prompt: Correct the answers I've given to this test, awarding each correct answer ten marks, and give me a percentage grade. Also, explain in detail the questions I got wrong. Remember to attach your answer-PDF to the conversation.
ChatGPT will then grade your work and provide any feedback you need.

You can use the same PDF'd notes to generate a series of multiple-choice questions, true or false questions, even short response questions.

In a matter of hours, you could reasonably have AI assess your knowledge of an entire course.