The abscissa of the first question gives no percentage at all, so its value 1.0 means nothing more than millions or tens of millions. The counting grid is four grids faster, and 0.4 times 1000000 and 1000000 is only 400000.

Secondly, if you don't understand the question or see the picture above or don't understand the standard deviation, the standard deviation is the average of the distance between each score and the arithmetic mean. The smaller it is, the closer it is to everyone's evaluation. Just compare the standard deviation directly, and the minimum t is 0.43. You don't even look at questions like exams. ...

Well, I got a G on the 23rd and saved RP. ...