For the data set 7,5, 10, 11, 12, the mean, x, is 9. What is the standard
deviation?
The formula for the sample standard deviation is s =
2(x-7).
n-1
Use the table to help you.
(x-x)?
7
4
16
1
2
1
4
3
9
Sum =
Round your answer to the nearest tenth.

666666666666666666666

6

6

6

6

6

6

6

66

6

6

6

66

6

66answer:

step-by-step explanation:

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

6: 07 is your answer

step-by-step explanation: