IGNOU MMPC-005 December 2021 Previous Year Question Paper

Q1.What do you understand by probability sampling methods ? Explain the various types of probability sampling.

Q2.Find the coefficient of correlation from the following data : Fertilizer used (in metric tonnes) Productivity (in metric tonnes) 15 85 18 93 20 95 24 105 30 120 35

Q3.Assume the mean height of soldiers to be 68·22 inches with a va riance of 10·8 inches. How many soldiers in a regiment of 1000 would you expect to be over 6 feet tall ? (Given : From Z table are a between 0 and 1·15 = 0·3749)

Q4."The primary purpose of forecasting is to provide valuable information for planning the design and operation of the enterprise. Planning decisions may be long-term, medium-term and short-term." In view of the statement , explain the application of forecasting for long-term decisions.

Q5.What do you understand by the term "Probability theory" ? Explain different approaches to Probability theory.

Q6.Write short notes on any three of the following :

(a) Mathematical Properties of Median

(b) Normal Distribution

(c) One-Tailed Test

(d) Hypothesis Testing Procedure

(e) Regression Analysis

Q7.What do you understand by the term "classification of data" ? What is the main reason of classifying data ? Also , explain some common types of classification.

Q8.A coin is tossed 6 times. W hat is the probability of obtaining 4 or more heads ? Wh at is the probability of getting at least 2 heads ?