Took this as an elective and it was literally the worst unit I have ever done. The content is not engaging and the lectures are hard to understand. Don't waste your money on the textbook because it is completely useless. So glad this unit is over. The practical excel work at the start of the trimester is super helpful for real world application, which is why I stuck with the unit instead of dropping it, but this part is not examinable, so it just went downhill from here.