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12th Standard English Medium Business Maths Subject Applied Statistics Book Back 2 Mark Questions with Solution Part - II

Published on: 04/06/2021

QB365 provides detailed and simple solution for every Book back Questions in class 12 Business Maths Subject. It will helps to get more idea about question pattern in every book back questions with solution.

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Std: 12th Standard - Business Maths and Statistics

chapter: - Book back Questions

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Questions:

Generic 2

5 x 2 = 10

Write the control limits for the R chart.

What are the uses of statistical quality control?

Define mean chart.

Define a control chart.

What do you mean by product control?

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Answers Key:

Generic 2

5 x 2 = 10

Case (i) when SD are given	Case (ii) when SD are not given
(i) UCL = \(\overline{R} + 3 {\sigma}_{R}\)	(i) UCL = D₄ \(\overline {R }\)
(ii) CL = \(\overline {R }\)	(ii) CL = \(\overline {R }\)
(iii) LCL = \(\overline {R} - {3\sigma_{R}}\)	(iii) LCL = D₃ \(\overline {R }\)

I. It is a powerful technique used to diagnose the lack of quality in any of the raw materials, process, machines etc.
II. It is essential that the end products should possess the qualities that the consumer expects from the manufacturer.

The mean chart is to show the quality averages of the samples taken from the given process

The statistical tool applied in process control is the Control Chart. Control Charts are the devices to describe the patterns of variation. It is an instrument to be used in specitication, production and inspection and is the core of statistical quality control. It is essentially a graphic device, simple to construct and easy to interpret.

Product control means that controlling the quality of the product by critical examination through sampling inspection plans. It aims at a certain quality level to be guaranteed to the customers. It attempts to ensure that the product sold does not contain a large number of defective items.