Variable Sample Size and Sampling Interval X¯ Charts with Runs Rules for Switching Between Sample Sizes and Sampling Interval Lengths

2012 ◽  
Vol 29 (1) ◽  
pp. 63-76 ◽  
Author(s):  
Shashibhushan B. Mahadik
Keyword(s):  
Sample Size ◽  
Sampling Interval ◽  
Sample Sizes ◽  
Variable Sample Size ◽  
Runs Rules ◽  
Interval Lengths

VARIABLE SAMPLE SIZE AND SAMPLING INTERVAL HOTELLING'S T2 CHARTS WITH RUNS RULES FOR SWITCHING BETWEEN SAMPLE SIZES AND SAMPLING INTERVAL LENGTHS

2013 ◽  
Vol 20 (04) ◽  
pp. 1350015 ◽  
Author(s):  
SHASHIBHUSHAN B. MAHADIK
Keyword(s):  
Sample Size ◽  
Performance Measures ◽  
Sampling Interval ◽  
Sample Sizes ◽  
Variable Sample Size ◽  
Hotelling's T2 ◽  
Runs Rules ◽  
Hotelling’S T2 ◽  
Interval Lengths

Variable sample size and sampling interval (VSSI) T2 charts are substantially more efficient than static T2 charts. However, the frequent switches between sample sizes and sampling interval lengths can be a complicating factor during the implementation of these charts. In this paper, runs rules are proposed for switching between sample sizes and sampling interval lengths of VSSI T2 charts in order to reduce the frequency of switches. The expressions for performance measures for the charts with these runs rules are developed. The effects of different runs rules on performances of the charts are evaluated numerically. In general, runs rules substantially reduce the frequency of switches. However, some runs rules significantly affect statistical performances of the charts.

Circular Systematic Sampling with Varying Probabilities

1987 ◽  
Vol 36 (3-4) ◽  
pp. 193-196 ◽  
Author(s):  
Arijit Chaudhuri ◽  
Arun Kumar Adhikary
Keyword(s):  
Sample Size ◽  
Population Size ◽  
Sampling Interval ◽  
Systematic Sampling ◽  
Simple Condition ◽  
Sample Sizes

Certain conditions connecting the population size, sample size and the sampling interval in circular systematic sampling with equal probabilities are known. We present here a simple “condition” connecting the sample size, size-measures and the sampling interval in pps circular systematic sampling. The condition is important in noting limitations on sample-sizes when a sampling interval is pre-assigned.

scholarly journals Risk-Based X-bar chart with variable sample size and sampling interval

2018 ◽  
Vol 120 ◽  
pp. 308-319 ◽  
Author(s):  
Zsolt Tibor Kosztyán ◽  
Attila Imre Katona
Keyword(s):  
Sample Size ◽  
Sampling Interval ◽  
Variable Sample Size
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