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D 31883 (Pages : 3) வாரி? அவைத்‌ வைக

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THIRD SEMESTER (CBCSS—UG) DEGREE EXAMINATION
NOVEMBER 2022

Economics
ECO 3B 03—QUANTITATIVE METHODS FOR ECONOMIC ANALYSIS—I
(2019 Admission onwards)
Two Hours and a Half Maximum : 80 Marks
Section A (Short Answer Questions)
Maximum marks in this section is 25.
Students can attempt all questions.
Each question carries a maximum of 2 marks.

Find the range of the set 6, 8, 12, 18, 1,5,9, 11, 15.
What is Spearman’s Rank correlation ?
Explain the concept of Adjoint of a matrix.
Define Variables and Constants.
Find the number of digits in 2”,
What are the important properties of Matrix multiplication ?

The grades of a student in six examinations were 84, 91, 72, 68, 87 and 78. Find the Arithmetic
mean of the grades.

What is Rectangular hyperbola ?

What is a Determinant ?

Point out the merits and demerits of Mode.
Write a short on Graphical Presentation of Data.
What is scatter diagram ?

Explain the concept of Identity matrix.

Turn over

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