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# ECO-07 Elements of statistics (English Medium) SOLVED ASSIGNMENT 2018-2019

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Course Code : ECO-07
Course Title : Elements of statistics
Assignment Code : ECO-07/TMA/2018-19
SOLVED ASSIGNMENT FOR JULY 2018 AND JANUARY 2019 SESSIONS
( ECO-7 IN ENGLISH MEDIUM )

SKU: ECO-07 EM Categories: , ,

## ECO-07 Solved Assignment 2018-19

Course Code : ECO-07
Course Title : Elements of statistics
Assignment Code : ECO-07/TMA/2018-19
Coverage : All Blocks

 Title Name ECO-07 Company Law Solved Assignment 2018-19 University IGNOU Service Type Solved Assignment (Soft copy/PDF) Course BCOM Language ENGLISH Semester 2018-2019 Course: BCOM Session 2018-19 Short Name ECO-07 (ENGLISH) Assignment Code ECO-07/TMA/2018-19 Product Assignment of BCOM 2018-2019 (IGNOU) Submission Date before March 31th, 2019 for the session July, 2018 and before September 30th, 2019 for the session January 2019 Price RS. 100 60

Attempt all the questions.
1. What is sampling? Explain various methods of sampling? (20)
2. Differentiate between primary data and secondary data. Describe the factors that affect the
choice of data to be used in investigations. (20)
3. (a) Find the missing frequency from the following data. (10)
Marks 0-10 10-20 20-30 30-40 40-50 50-60
No. of
students
15 25 30 – 30 20
Arithmetic mean of marks is 44.
(b) Calculate mode from the data given below: (10)
Profit (Rs. In
Lakh)
0-5 5-10 10-20 20-30 30-50
No of
Companies
2 3 8 9 10
4. Calculate mean and standard deviation from the following distribution: (20)
Class
Interval
10-20 20-30 30-40 40-50 50-60 60-70 70-80
Frequency 2 4 4 8 6 3 2

5. Write short notes on the following. (4X5)
(a) Skewness
(b) Sampling and Non sampling
(c) Lorenz Curve
(d) Schedule and questionnaire

ECO-07, ECO-7, ECO 07, ECO 7, ECO07, ECO

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