Complete the chart to find the mean variance and standard deviation. Remember to use commas and round numbers to
the nearest tenth
X
X XL
(X-82
1.345
= 82.5 =
The mean is
2.340
= 875 =
The variance is
3. 400
= -27.5 =
The standard deviation is
4.625
= 197.5 =
EX=
(X-X)? = 54,2250

ok

step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

step-by-step explanation: i dont