so, the standard deviation is not about the area? since the first picture show us that the area is 68% for 2 (|standar dev|) (which means 34% for each standard deviation area), BUT at the second pic with the 95% area for 4 stdv (which means each stdv is 23,75), and also for the third picture are not the same. The area of a stdv in first pic is 34%; the 2nd pic is 23,75%; and at the 3rd pic is (99,7/6)%.
"Here's where your colours are gonna come in"
Never have I heard that phrase in my A Levels ;(
Where can I get a formula data sheet too!?! 😁
so, the standard deviation is not about the area? since the first picture show us that the area is 68% for 2 (|standar dev|) (which means 34% for each standard deviation area), BUT at the second pic with the 95% area for 4 stdv (which means each stdv is 23,75), and also for the third picture are not the same. The area of a stdv in first pic is 34%; the 2nd pic is 23,75%; and at the 3rd pic is (99,7/6)%.
Hi Eddie, what’s the drawing tool app that you use on your iPad?
notability
This is very bad to mix signs for average and sd of sample and population