account.docx - NOTE ANSWERSHIGHLIGHTED IN RED Part B Attempt five of the following 10*5=50 marks 1 What do you mean by secondary data What are the

# account.docx - NOTE ANSWERSHIGHLIGHTED IN RED Part B...

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NOTE: ANSWERSHIGHLIGHTED IN RED Part B: Attempt five of the following: 10*5=50 marks 1. What do you mean by secondary data? What are the precaution to be taken in their use? Secondary data refers to data which is collected by other persons and not direct users and is retrievable by other users. One should authenticate the methods used to collect secondary data and possible errors in it before using it. 2. Explain with examples the rules of Addition and Multiplication in theory of probability. Adddition rule applies for mutually exclusive events and states that the probability that any of the events will occur is giventby the sum of the probability of each event less the probability of overlapping. The rule of multiplication states that the probability of two events occurring is given by the product of their probabilities. 3. The following data give the hardness (x) and tensile strength (y) of 7 samples of metal in certain units. Find the linear regression equation of y on x.

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• Fall '16
• AsokanV.

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