QUALITY CONTROL IIBM MBA EXAM ANSWER SHEET

QUALITY CONTROL IIBM MBA EXAM ANSWER SHEET

Quality Control

Section A: Objective Type

Part One:

Multiple Choices:

1. A curve that shows the amount inspected by both the consumer and the producer for different percent nonconforming values.

a. ASN curve

b. ATI curve

c. AOQ curve

d. None of the above

Ans: B. ATI Curve

2. The producer’s risk is represented by the symbols

a. Alpha

b. Beta

c. Gamma

d. None of the above

Ans: A. Alpha

3. The International Committee of Weights and Measures revised the metric system in

a. 1970

b. 1960

c. 1950

d. 1999

Ans: A. 1970

4. ASRS stands for……………………………………………………………………..

Ans: Aviation Safety Reporting System

5. A recent survey of retail customers by the ……………………………………………..

Ans: National Retail Federation

6. A cause-and-effect diagram was developed by ………………………………………

Ans:  Dr. Ryuji Fukuda

7. Variables that exhibit gaps are called ………………………………

Ans: Co-efficient

8. How many techniques used to discard data.

a. One

b. Two

c. Three

d. None of the above

Ans: B. Two

9. Deviation charts are also called

a. Difference chart

b. Nominal chart

c. Target chart

d. (a), (b), & (c)

Ans: B. Nominal chart

10. Dodge-Romig Tables developed by

a. H.F. Dodge

b. H.G. Romig

c. H.K. Fleming

d. Both (a) & (b)

Ans: B. H.G. Romig

Part Two:

1.      Write short note on “Group Chart”.

A diagram that outlines the internal structure of a company. A group chart is the most common visual depiction of how an organization is structured. It outlines the roles, responsibilities and relationships between individuals within an organization. A group chart can be used to depict the structure of an organization as a whole, or broken down by department or unit.

2.      What is “Measures of Dispersion”.

Measures of dispersion measure how spread out a set of data is.
Variance and Standard Deviation
The formulae for the variance and standard deviation are given below. m means the mean of the data.

The standard deviation, s, is the square root of the variance.
What the formula means:
(1) x_r - m  means take each value in turn and subtract the mean from each value.
(2) (x_r - m)²  means square each of the results obtained from step (1). This is to get rid of any minus signs.
(3)  S(x_r - m)²  means add up all of the results obtained from step (2).
(4) Divide step (3) by n, which is the number of numbers
(5) For the standard deviation, square root the answer to step (4).

3.      What is “Collection of Data”.

Data collection usually takes place early on in an improvement project, and is often formalised through a data collection plan which often contains the following activity.

1. Pre collection activity — agree on goals, target data, definitions, methods
2. Collection — data collections
3. Present Findings — usually involves some form of sorting analysis and/or presentation.

Prior to any data collection, pre-collection activity is one of the most crucial steps in the process. It is often discovered too late that the value of their interview information is discounted as a consequence of poor sampling of both questions and informants and poor elicitation techniques. After pre-collection activity is fully completed, data collection in the field, whether by interviewing or other methods, can be carried out in a structured, systematic and scientific way.

A formal data collection process is necessary as it ensures that data gathered are both defined and accurate and that subsequent decisions based on arguments embodied in the findings are valid.^[4] The process provides both a baseline from which to measure and in certain cases a target on what to improve.

Other main types of collection include census, sample survey, and administrative by-product and each with their respective advantages and disadvantages. A census refers to data collection about everyone or everything in a group or statistical population and has advantages such as accuracy and detail, and disadvantages such as cost and time. A sampling is a data collection method that includes only part of the total population and has advantages such as cost and time, and disadvantages such as accuracy and detail. Administrative by-product data are collected as a by-product of an organization's day-to-day operations and has advantages such as accuracy, time and simplicity, and disadvantages such as no flexibility and lack of control

4. Write short note on “Binomial Probability Distribution”.

An experiment has a binomial probability distribution if three conditions are satisfied.

a. There are a fixed number of trials. The number of trials is denoted by n.

b. The trials are independent.

c. The only outcomes of this experiment can be classified as "succeed" or "fail" (equivalently "yes" or "no"). Furthermore, the probability of success is fixed. The probability of success is denoted by p.

example: A multiple choice test contains 20 questions. Each question has five choices for the correct answer. Only one of the choices is correct. With random guessing, does the test have a binomial probability distribution?

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