Question

The following table shows the probability of rolling the numbers 1 through 7 on a fair 7-sided die.

X 1 2 3 4 5 6 7
P(X) 1/7 1/7 1/7 1/7 1/7 1/7 1/7
What is the standard deviation of the random variable X, "the number that comes up on the die"?
A. 3.745
B. 1.708
C. 2.0
D. 3.5
E. 2.917

Answer 1

@coltjoco

Answer 2

@jakashaka123 idk at all

Answer 3

yeah what you need

Answer 4

hellp

Answer 5

c

Answer 6

say c

Answer 7

you cant have a decimal on a die

Answer 8

The Standard Deviation is a measure of how spread out numbers are.

Its symbol is σ (the greek letter sigma)

The formula is easy: it is the square root of the Variance

Answer 9

Variance is defined as:

The average of the squared differences from the Mean

Answer 10

thanks ssoooo much

Answer 11

np

Answer 12

woop woop

Answer 13

yeah my lil friends from yestaday

Answer 14

hehe

Answer 15

we should do a group convo on kik lol