Question

@AZ

Answer 1

For the graph
I just know like the center would be 21, and the one thingy would be 5.2

Answer 2

Hmm how much do you know about standard deviation?

Answer 3

1 standard deviation above and below represents 68% of the values

2 would include 95% of the data
3 standard deviations includes 99.7% of the data

Answer 4

okay so then how do i get the points of inflections-

Answer 5

and yea, I did take notes on the 68 95 99 thing but I just don't get how to use it

Answer 6

so it's just going to be

the mean + 1 SD
the mean - 1 SD

the mean + 2 SD
the mean - 2 SD

the mean + 3 SD
the mean - 3 SD

21 + 5.2
21 - 5.2

21 + (2*5.2)
21 - (2*5.2)

21 + (3*5.2)
21 - (3*5.2)

Answer 7

oh, kay o-o

Answer 8

those are just going to be your x-values

Answer 9

when you get to calculus, you'll learn about how to find inflection points

basically when the second derivative = 0

Answer 10

oh, kay e.e lol

Answer 11

wait actually I don't think it would include the second and third SD

it should just be the first SD

Answer 12

and so for A it would be 50% since 21 divides it in half
how about for b tho-
there's 15.8, should i just do that? 50 + 34?

Answer 13

the concept of inflection is that the graph changes from concave to convex or vice versa

Answer 14

Probably a better image

Answer 15

o-o

Answer 16

But the concept of inflection in general

Answer 17

if it doesn't make any sense, don't worry about it lolol

Just

the mean + 1 SD
the mean - 1 SD

21 + 5.2
21 - 5.2

Answer 18

for c
13.5+68 = 81.5?

Answer 19

where did you get 13.5 from

21 + 5.2 = 26.2
21 - 5.2 = 15.8

so from 16 to 26 is 1 standard deviation

which is how much

Answer 20

but it's from 11 o-o

Answer 21

which is minus 2 sd to positive sd o-O

Answer 22

ohhhh

you're right