IGNOU BECS-184 December 2024 Previous Year Question Paper

Q1.What is the importance of graphical presentation of data ? What are the various types of graphs ? How can _ graphical presentation be misinterpreted ?

Q2.(a) Describe different measures of central tendency.

(b) Suppose that a company is facing the following growth data over the last 5 years: Year Growth rate 1 10% 2 20% 3 18% 4 -9% 5 11% Now it wants to study the average growth. Which measure of central tendency will be suitable in this case ? Why ?

Q3.Explain the process of the tabulation of the data. Describe the components of a statistical table. What precautions will you take while preparing a statistical table ?

Q4.Explain the concept of set. Describe various set operations with the help of examples.

Q5.Distinguish between skewness and kurtosis. How will you infer about the shape of a distribution by using skewness and kurtosis ?

Q6.(a) Define a random variable. Give example of events from real life which can be considered as random variable.

(b) Define probability distribution. State the properties of a continuous probability distribution.

Q7.Distinguish between point estimation and interval estimation. Describe the properties of a good estimator.

Q8.What do you understand by the term composite index ? Explain the steps involved in its construction.

Q9.List out the important points that should be kept in mind while interpreting the results of multivariate analysis.

Q10.What are the characteristics of a good questionnaire ? Suppose you have to conduct a study in a village to access the effectiveness of ‘Swachha Bharat Abhiyan’. Prepare five questions to conduct this study.

Q11.Give a brief account of the methods of primary data collection.

Q12.Write short notes on any three of the following :

(a) Snowball sampling

(b) Focus group discussion

(c) Pie chart

(d) Frequency distribution

(e) Parameter and Statistic TIE! 2x20=40 1 10% 2 20% 3 18% 4 -9% 5x12=60 Statistics)