Principles of Statistical Design for Microbiological Sampling. Martin Cole Data Collection and Utilization in Risk Assessment and Management Decisions College Park Sept 14th, 2004. Overview. Definitions and Uses Sampling plans ICMSF Cases Indicators To Test or Not Relationship to FSOsBy gigi
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Sampling plans. Given a domain, we can reduce the prediction error by good choice of the sampling points The choice of sampling locations is called “design of experiments” or DOE
Sampling Plans. Basic Sampling Concepts. Population The aggregate of cases in which a researcher is interested Sampling Selection of a portion of the population (a sample ) to represent the entire population Eligibility criteria The characteristics that define the population
Sampling Plans. MWWA Annual Seminar Winnipeg – February 4, 2013 Morley Smith, Office of Drinking Water. Legend WTP Bacti & Cl (Flow) Bacti & Cl (Vul. Pop.) THM HAA Lead. Office of Drinking Water. ? What Community was it?.
Sampling Plans. Three types of Sampling Plans Sampling Inspection by attributes MIL-STD-105E (ANSI/ASQC Z1.4 – 1981) Sampling Inspection by variables MIL-STD-414 (ANSI/ASQC Z1.9 – 1980) Dodge-Roming. MIL-STD-105E. Single sampling plans for Normal Inspection. MIL-STD-105E.
Sampling Plans. Cluster Sampling--appropriate when the level of treatment is not the individual, i.e., grouping each class receiving the treatment as one observation.Systematic Sampling--select every nth element. Sampling Plans. Purposive Sampling--every member of the population that meets some
Acceptance Sampling plans. Prosedur pengambilan keputusan thdp produk yg datang atau sudah dihasilkan perusahaan Ada 3 metode : 1. Tanpa inspeksi 2. Inspeksi 100% 3. Sampel penerimaan (Acceptance Sampling). Konsep Dasar. Bukan alat pengendalian/teknik perbaikan kualitas
a. . AQL LTPD. Acceptance Sampling Plans. Supplement I. Acceptance Sampling. Acceptance sampling is a statistical process for determining whether to accept or reject a lot of products by testing a random sample of parts taken from the lot.
Chapter 12 Sampling Plans. Basic Sampling Concepts. Population The aggregate of cases in which a researcher is interested Sampling Selection of a portion of the population (a sample ) to represent the entire population Eligibility criteria The characteristics that define the population