DataStacks - Statistics

In this topic: Hide

 

The selected Statistics calculations are applied to the entire DataStack.

Statistic Description
Correlation Coefficient Linear Correlation Coefficient measures the strength and the direction of a linear relationship between two variables.
Count  
Cp

Capability index (potential capability)

Cpk

Capability index (potential capability corrected for centering)

CpM

Capability of process index influenced by the difference between the sample mean and the nominal target value.

CR

Capability Ratio

Hi

The highest value in the specified DataSet row.

Kurtosis

Measure of flatness of a distribution

Lo

The lowest value in the specified DataSet row.

Mean

The mean value of the valid data within a DataSet. The mean is the sum of values divided by the number (sample size) of values (i.e., the average value of a set of numbers).

Multiply As Percentages A type of Six Sigma calculation performed on the selected DataStack(s).
Pp

Performance index.

Ppk

Performance index.

PR

Performance ratio.

Process Cp  
Process Cpk  
Process CpM  
Process Estimated Standard Deviation  
Process Grand Individual Subgroup Average  
Process Grand Moving Subgroup Average (MA-MR)  
Process Individual Average  
Process Lower Specification Limit  
Process Maximum Subgroup Size  
Process Moving Range Average (MR-Bar)  
Process Nominal  
Process Pp  
Process Ppk  
Process PR  
Process PR  
Process Range Average (R-Bar)  
Process Samples  
Process Standard Deviation  
Process Standard Deviation Average (S-Bar)  
Process Target Standard Deviation  
Process Upper Specification Limit  
Range

The range of data of the DataSet row.

Skewness

Measure of symmetry of distribution

Standard Deviation  
Subgroup Count  
Subgroup Hi  
Subgroup Invalid Count  
Subgroup Lo  
Subgroup Mean (XBar)  
Subgroup Moving Average  
Subgroup Moving Range  
Subgroup Range  
Subgroup Standard Deviation

Standard deviation of a subgroup within a sample of data. Used to calculate Sbar.

Subgroup Sum  
Subgroup Valid Count  
Sum

The sum of all valid data within a DataSet row.

Variance

Returns the Variance value of a DataSet row. In a population of samples, the Variance value is the mean of the squares of the difference between the respective samples and their mean. Basically, it is the measure of the spread of data, or the standard deviation, squared.

Worst