# ECO-07 SOLVED ASSIGNMENT 2018-19

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          15            25             30             –               30               20

students

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                       2                      3                   8                      9                  10

Companies

4. Calculate mean and standard deviation from the following distribution: (20)
Class                 10-20      20-30     30-40    40-50    50-60    60-70      70-80
Interval
Frequency          2               4               4           8              6             3                2

### 6 Responses

1. vinay kumar says:

I want Hindi medium

2. Nafi san says:

3. Saba says:

Sir yha question 2 to solve hi nhi h

4. Deepshikha Kumari says:

Please upload b.com 2019 2020 solved assignment of all paper
For this I will very grateful to you
You guffo team do very good work for ignou students which is very helpful to us

• Team Guffo says:

most of solved assignment updated…. plz check

5. Priti says:

I wanted 2019_20 assignment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

error: Content is protected !!