2019-20

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

20.00

Course Code : ECO-07 Elements of Statistics English Medium 2019-20 (July 2019 and January 2020) 15th March, 2020 (for July 2019 session) 15th September, 2020 (for January 2020 session) Click Here
SKU: ECO-07 EM 2019-2020 Category:

## Description

University : IGNOU BCOM ECO-7 Elements of Statistics English Medium July 2019 and January 2020 (2019-20) 100 30% 15th March, 2020 (for July 2019 session) 15th September, 2020 (for January 2020 session) Softcopy (PDF File)

TUTOR MARKED ASSIGNMENT

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

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