2020-21

# ECO-07 Elements of Statistics Solved Assignment 2020-21 in English

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Course Code : ECO-07 Elements of Statistics English Medium 2020-21 (July 2020 and January 2021) 1. Those who are enrolled in July 2020, it is valid up to June 2021. 2. Those who are enrolled in January 2021, it is valid up to December 2021. Click Here
SKU: ECO-07 EM 2020-21 Category:

## Description

University : IGNOU BCOM ECO-07 Elements of Statistics English Medium July 2020 and January 2021 (2020-21) 100 30% 1. Those who are enrolled in July 2020, it is valid up to June 2021. 2. Those who are enrolled in January 2021, it is valid up to December 2021. Softcopy (PDF File)

TUTOR MARKED ASSIGNMENT

Course Code : ECO-05
Course Title : ELEMENTS OF STATISTICS
Assignment Code : ECO-07/TMA/2020-21
Coverage : All Blocks

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.

Keywords: ECO-07, ECO07, ECO 07, ECO-7, ECO7, ECO 7

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