Avinash.tech(…)

Category: Math

  • Correlation Coefficient ( r )

    What is a Correlation Coefficient ?

  • Normal Curve and Standard Units

    Whats a Normal Curve ?  What is Standard unit ? A value is converted to Standard Units by seeing how many SD’s it is above or below the average. Lets take the following example to make it a bit clearer. The average height for women age 18 and above was suppose…

  • SD – Standard Deviation

    Standard Deviation measures the spread around the average. In other words by how much is an element in data away or closer to the average. What is a Standard Deviation ? How does one find Standard Deviation ( SD ) ? SD for any given data can be found in …

  • Gilbert Strang – Linear Algebra

    There are times when I wished to have a teacher with magical powers to help understand something as basic as a matrix and the whole world that is built around it. Luckily, if you look at the right place, we do find them and make our lives worthwhile again in…

  • Math and Machine Learning

    The fact that I needed all this math for ML reminded me the horrific tales of math and my grumpy teacher in college that always used to remind me how bad I was in Math 🙂 . Over the years it made me realise that it was not that big…