Control charts that are based on assumption (s) of a specific form for the underlying process
distribution are referred to as parametric control charts. There are many applications where …

Statistical quality control is a very useful tool in the hands of business in order to improve
their products quality. The control charts are the most widely used and the most effective tool …

This study describes the assessment of air quality in Albania using moss biomonitoring. The
moss species, Hypnum cupressiforme (Hedw) sps., was used in this study. Mosses were …

This paper proposes an adaptive, multivariate, nonparametric, exponentially weighted
moving average control chart with variable sampling interval. A number of studies have …

Non-parametric control charts have been good alternatives to parametric control charts
when little information is known about the type of process distribution or the value of …

In this article, we introduce new nonparametric Shewhart-type control charts that take into
account the location of two order statistics of the test sample as well as the number of …

Cumulative sum (CUSUM) and exponentially weighted moving average (EWMA) schemes
are widely used in monitoring small and persistent shifts in specific process characteristics …

Motivated by a telecommunications application where there are few computational
constraints, a novel nonparametric algorithm, NUNC, is introduced to perform an online …

In this paper, we provide an adaptive Phase II nonparametric exponentially weighed moving
average control chart using variable sampling interval for detecting a range of shifts in the …

The special causes of variations, which is also known as a shift, can occur in a single or
more than one related process characteristics. Statistical process control tools such as …