With the outbreak of World War II, Dantzig took a leave of absence from the doctoral program at Berkeley to join the U . S . Air Force Office of Statistical Control.
32.
The group was part of a management science operation within the Army Air Force known as Statistical Control, organized to coordinate all the operational and logistical information required to manage the waging of war.
33.
The review, which had statistical controls for socio-economic status of the students and resources of the schools, etc ., found that the results of studies on the effects of single-sex schooling " are equivocal.
34.
For normally distributed statistics, the area bracketed by the control limits will on average contain 99.73 % of all the plot points on the chart, as long as the process is and remains in statistical control.
35.
If on the other hand, the sample variability is " not " in statistical control, then the entire process is judged to be not in statistical control regardless of what the \ bar x chart indicates.
36.
If on the other hand, the sample variability is " not " in statistical control, then the entire process is judged to be not in statistical control regardless of what the \ bar x chart indicates.
37.
Application of statistical control came later as a result of World War production methods, which were advanced by the work done of W . Edwards Deming, a statistician, after whom the Deming Prize for quality is named.
38.
When the economists do the two land-price calculations using statistical controls and a large set of housing data, however, they find that the two ways of measuring the price of land get very different results in places where housing is particularly expensive.
39.
Thus, the R chart is examined before the \ bar x chart; if the R chart indicates the sample variability is in statistical control, then the \ bar x chart is examined to determine if the sample mean is also in statistical control.
40.
Thus, the s chart is examined before the \ bar x chart; if the s chart indicates the sample variability is in statistical control, then the \ bar x chart is examined to determine if the sample mean is also in statistical control.
