Particularly with higher sigma levels, the analysis needs to move beyond assuming a normal distribution curve
. IIoT platforms provide a broad set of analytics.
Figure 4(b) also shows that data are following a normal distribution curve
Generally the normal distribution curve
is forcibly fitted to the data and based on that marks are normalised.
Here the demand is considered as two different cases for the limits of o.67std, 1std, 2std, 3std of the normal distribution curve
. In the first case sudden raise of the demand is considered from mean to upper limit and x is calculated in terms of percentage.
Until recently, grade boundaries were set then checked using the normal distribution curve
to make sure approximately the same number of candidates were awarded the same grades each year.
This is because the area under the normal distribution curve
out to the standard deviation point is 0.341.