Before we move on to the next step, you can go ahead and use the same formula for skill 2 and 3. Make sure you have the right column, and operators.


Now, we will create a column that represents the incorrect answers so far on skill 1, 2, and 3. This will be used with PFA's rho parameter. In the dataset, you will see columns fail-so-far-skill1, fail-so-far-skill2, and fail-so-far-skill3. Using the same method, complete all the fail-so-far-skill columns.



What is the value of the last row in column 'fail-so-far-skill3'?