Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest tenth. X
X
X - X
(X - X )2
1. 45 = -357.5=
The mean is
2. 340 = -62.5=
The median is
3. 400 = -2.5=
The variance is
4. 825 = 422.5=
The standard deviation is

Σ X =
_
X =
_
Σ (X - X)2 = 310,225.2
n =

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).