B.Sc.   DEGREE EXAMINATION, NOVEMBER 2017.
 I Year I Semester
Core Major - Paper I  -   DESCRIPTIVE STATISTICS
Time : 3 Hours								Max. Marks : 60
SECTION A – (10 × 1 = 10 marks)
Answer any TEN questions

1.	What is meant by primary data?
2.	Define an ordinal data.
3.	Give the types of classification.
4.	What are called as Ogive curves?
5.	What is Skewness?
6.	Give the types of Kurtosis.
7.	Find Median from the following:  23, 34, 30, 47, 21, and 32.
8.	What is the range of Correlation coefficient?
9.	Write any two properties of regression coefficients.
10.	What is an attribute?
11.	What do you mean by contingency table?
12.	How to locate Median graphically?

SECTION B – (5 × 4 = 20 marks)
Answer any FIVE questions
13.	Explain the sources of secondary data.
14.	Explain the construction of Histogram with an example.
15.	Describe briefly Kurtosis.
16.	What is Dispersion? Also explain Absolute measure of dispersion. 
17.	What is Regression?  What is the need for having two regression lines? 
18.	Give the parts and structure of a statistical table.
19.	Given: (A) = 490, (AB) = 294, (α) = 570, (αB) = 380. Check for independence as well as association. 
SECTION C – (3 × 10 = 30 marks)
Answer any THREE questions
20.	Explain the sources of collection of primary data in detail. 
21.	Explain the various diagrammatic representations of statistical data with an example.
22.	Describe the concept of Skewness in detail.
23.	Explain the different types of correlation with the help of a scatter diagram.
24.	Explain different measures of association.
___________