ECO-07 Solved Assignment 2019-20 | Elements of Statistics | English Medium

Description

University :	IGNOU
Program :	BCOM
Course Code :	ECO-7
Course Title :	Elements of Statistics
Medium :	English Medium
Session :	July 2019 and January 2020 (2019-20)
Max Marks :	100
Weightage :	30%
Last Date of Submission :	15th March, 2020 (for July 2019 session) 15th September, 2020 (for January 2020 session)
Solution Type :	Softcopy (PDF File)

TUTOR MARKED ASSIGNMENT

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Course Code	: ECO-05
Course Title	: ELEMENTS OF STATISTICS
Assignment Code	: ECO-07/TMA/2019-20
Coverage	: All Blocks

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Maximum marks: 100

Attempt all sections.

1. What is statistical survey? Discuss the steps to be followed while conducting statistical survey.
2. Central tendency, dispersion an skewness are three different measures to analyse numerical data. Comment.
3. Calculate a) Mean, b) Variance and c) Standard deviation from the following frequency distribution:-
   

   Classes	Frequency
   1-10	11
   10-20	29
   20-30	18
   30-40	4
   40-50	5
   50-60	3

4. a) What is the relationship between Mean. Median and Mode:
   (i) Symmetrical curve
   (ii) A negatively slewed curve
   (iii) A positively skewed curve
   b) For a frequency distribution: Q3-Q2 = 40 & Q2-Q1=60 Find coefficient of skewness.
5. Write short notes on the following –
   a) Principle of preparing graphs.
   b) Statistical Table
   c) Data Array
   d) Properties of Normal Curve.