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In statistical quality control, the individual/moving-range chart is a type of control chart used to monitor variables data from a business or industrial process for which it is impractical to use rational subgroups. [1] The chart is necessary in the following situations: [2]: 231
884 = 2 2 × 13 × 17, the Mertens function of 884 returns 0, number of points on surface of tetrahedron with sidelength 21 [70] 885 = 3 × 5 × 59, sphenic number, number of series-reduced rooted trees whose leaves are integer partitions whose multiset union is an integer partition of 7. [71] 886 = 2 × 443, the Mertens function of 886 returns 0
Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions. (ISO 7870-1) [1] The hourly status is arranged on the graph, and the occurrence of abnormalities is judged based on the presence of data that differs from the conventional trend or deviates from the control limit line.
The Dewey Decimal Classification (DDC) is structured around ten main classes covering the entire world of knowledge; each main class is further structured into ten hierarchical divisions, each having ten divisions of increasing specificity. [1]
the second anti-perfect number, meaning that reversing the digits of the proper divisors of 244 and adding the results gives 244 back again. [2] part of the sequence 1, 2, 4, 8, 61, 221, 244, ... in which each number is formed by reversing the digits of the double of the previous number. [3] the number of non-isomorphic set-systems of weight 8
In statistical process control (SPC), the ¯ and R chart is a type of scheme, popularly known as control chart, used to monitor the mean and range of a normally distributed variables simultaneously, when samples are collected at regular intervals from a business or industrial process. [1]
5, 10 17 FDD 700 Lower SMH 12, 85: 704 – 716 734 – 746 30 5, 10 18 FDD 850 Lower 800 26 815 – 830 860 – 875 45 5, 10, 15 Japan 19 FDD 850 Upper 800 5, 26 830 – 845 875 – 890 45 5, 10, 15 Japan 20 FDD 800 Digital Dividend: 832 – 862 791 – 821 −41 5, 10, 15, 20 EU 21 FDD 1500 Upper PDC 74 1447.9 – 1462.9 1495.9 – 1510.9 48 5 ...
Many graphs are also referred to as charts. [51] Eppler and Lengler have developed the "Periodic Table of Visualization Methods," an interactive chart displaying various data visualization methods. It includes six types of data visualization methods: data, information, concept, strategy, metaphor and compound. [52]