statsSpcFun {qAnalyst} | R Documentation |
Internal function to calculate control chart general statistics
Description
statsSpcFun
receives data and desidered chart informations. StatsFun returns a list whose elements are general and chart - specific statistics.
Usage
statsSpcFun(x, sg, type = type)
Arguments
x |
data vector. |
sg |
subgroups id, as specified in |
type |
chart type. |
Details
The type of chart is compulsory.
Value
A list with the following items:
numTot |
total number of elements in x. |
numNNmissing |
total number of non - missing elements in x. |
numMissing |
total number of missing elements in x. |
nGroupsX |
total number of groups in x. |
meanX |
mean of x. |
minX |
min of x. |
maxX |
max of x. |
sdTotX |
total standard deviation of x. |
sdWithinX |
sd within of x. |
sdBetweenX |
sd between of x. |
meanRangeX |
mean range of x. |
Note
Return a list used by spc.
Author(s)
Giorgio Spedicato
References
Internal function
See Also
Examples
#simple example
set.seed(100)
x=c(rnorm(30,m=10,s=1), rnorm(30,m=12,s=1), rnorm(30,m=10,s=4))
sg=sort(rep(1:30,3))
statsList=statsSpcFun(x=x, sg=sg, type = "xbar")
str(statsList)
[Package qAnalyst version 0.6.4 Index]