Statistical Quality Control - 9 P - Chart of Percentages and Unequal Sample Size Part-1 скачать в хорошем качестве

Statistical Quality Control - 9 P - Chart of Percentages and Unequal Sample Size Part-1

For more lectures/playlists on various topics, visit and subscribe my YouTube channel PUAAR Academy @    / prashantpuaar   #statistics #SQC #control #chart #pchart #problem #solution #free #tutorial Control Charts for Attributes i.e. for for presence or absence of any characteristic. It is based only a 'yes-or-no' type of conclusion based on whether the item complies with the specification. P - Chart, np - Chart and C - Chart are the control charts for attributes. For this purpose we need to define 'defect' in the item - i.e. a presence or absence of a particular characteristic. Then we just need to draw samples and count the number of defective units in each sample. Control Chart for Fraction Defectives' or 'Proportion of Defectives i.e. P - Chart Steps 1) Calculation of fraction defection of each of the samples. p = (No. of defective units in the sample)/(Sample size) Or p = np/n 2) Calculation of average fraction defective P(bar) = Σnp/Σn 3) Calculation of control limits UCLP = P(bar) + 3√[P (1 – P)/n] CLP = P(bar) LCLP = P(bar) – 3√[P (1 – P)/n] In case where the samples are of different size, the value of ‘n’ for calculation of the control limits is taken as average sample size of all the samples. Average sample size = Σn / No. of samples (N) For P – chart for percentage of defectives p = (np/n) x 100 P(bar) = (Σnp / Σn)X100 Problem/Case: The following figures give the number of defective units in 10 samples each of different sample size: Sample No.: 1 2 3 4 5 6 7 8 9 10 sample Size: 2000 1500 1400 1350 1250 1760 1875 1955 3125 1575 Number of Defective units: 425 430 216 341 225 322 280 306 337 305 Construct a suitable control chart and state your conclusion about the process. Probability, standard deviation, binomial distribution, normal distribution, poisson distribution, probability distribution, assignment problem in operations research, transportation problem in operations research, cpm, pert, binomial distribution in probability, chi square distribution, conditional probability, poisson distribution probability, job sequencing problem, assignment problem, northwest corner method, hungarian method for solving assignment problem, time series analysis in statistics, queuing theory in operations research, replacement problems in operations research, degeneracy in transportation problem, simulation problem in operational research, inventory model in operations research, fitting of binomial distribution, fitting of poisson distribution, pchart, cchart, npchart, mean chart, range chart, fit a binomial distribution, fit a poisson distribution, fitting of poisson distribution, fitting of binomial distribution, dual of transportation problem, duality, dual of linear programming problem, linear programming, simplex method, graphic method, graphical method, graph, odds, data science, data analysis, data mining, data management, dbms, data interpretation, reasoning, logic, coding, python, java, c, c++, c#, exponential distribution, uniform distribution, zvalue, zscore, Statistics, SQC, Statistical Quality Control, Control Chart, Control Chart for attributes, p Chart, Math, MBA, MCA, CA, CS, CPA, CMA, CWA, BBA, BCA, BCom, MCom, GRE, GMAT, Grade 11, Grade 12, Class 11, Class 12, IAS, CAIIB, FIII, IBPS, BANK PO, UPSC www.prashantpuaar.com