Complete the chart to find the mean, variance and standard deviation. Remember to use commas and round numbers to the nearest tenth.

X

х

X-X

(x-X)?

1.345

= -82.5 =

The mean is

2.340

= -87.5

v

The variance is

3. 400

= -27.5

The standard deviation is

4.625

197.5 =

n =

ΣΧ=

(X-X)2 = 54,225.0

add an image, and i will answer

step-by-step explanation:

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

imma say 16%. sorry if its wrong. i'm doing the same stuff right now

step-by-step explanation: