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IGNOU ECO-07 Elements of Statistics - Latest Solved Assignment

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IGNOU - ECO-07 (Jul 23 - Jan 24, Jul 22 - Jan 23) Solved Assignment

Are you looking to download a PDF soft copy of the Solved Assignment ECO-07 - Elements of Statistics? Then GullyBaba is the right place for you. We have the Assignment available in English and Hindi language. This particular Assignment references the syllabus chosen for the subject of Mathematics, for the July 2023 - January 2024 session. The code for the assignment is ECO-07 and it is often used by students who are enrolled in the B.COM, BBA Degree. Once students have paid for the Assignment, they can Instantly Download to their PC, Laptop or Mobile Devices in soft copy as a PDF format. After studying the contents of this Assignment, students will have a better grasp of the subject and will be able to prepare for their upcoming tests.

PLEASE MATCH YOUR ASSIGNMENT QUESTIONS ACCORDING TO YOUR SESSION

IGNOU ECO-07 (July 2023 – January 2024) Assignment Questions

Q.1 a) Calculate the standard deviation and variance from the following data:


b) What is coefficient of variation? What is its role as a measure of variation?

Q.2 What is sampling? Explain various methods of sampling? Why sample survey is preferred compared to census survey? Explain.

Q.3 Describe the problems that are usually confronted by the investigator when he decides to collect primary data. Explain various methods of collecting primary data and also narrate their merits and demerits.

Q.4 a) A motorist travelled for three days at the rate of 480 km. a day. On the first day he travelled for 10 hours at a speed of 48 km per hour, on the second day he travelled for 12 hours at a speed of 40 km. per hour and on the third day for 15 hours at a speed of 32 km. per hour. What was his average speed?
b) Calculate the arithmetic mean for the following data by using the two methods of Arithmetic mean for Discrete Series:


Q.5 Write short notes on the following:

a) Median
b) Negative skewness
c) Sampling errors
d) Objectives of classification

IGNOU ECO-07 (July 2022 – January 2023) Assignment Questions

Q.1 What is sampling? Discuss the various methods of sampling?

Q.2 If the mean of the given frequency distribution is 35, then find the missing frequency y. Also, calculate the median and mode for the distribution.


Q.3 a) Discuss the sources of secondary data. What precautions should be taken while using secondary data?
b) Define Geometric and Harmonic mean? Differentiate between them?

Q.4 The wages of nine workers are given below:
`310, `290, `320, `280, `300, `290, `320, `310, `280.
Find the following:
a) Standard Deviation
b) Variance

Q.5 Write short notes on the following:

(a) Distrust of Statistics
(b) Statistical Derivatives
(c) Moving Averages
(d) Properties of Normal Curve

IGNOU ECO-07 (July 2023 – January 2024) Assignment Questions

1. (क) निम्न समंको से मानक विचलन तथा प्रसरण का परिकलन कीजिये ।


(ख) विचरण गुणांक क्या होता है ? विचरण के एक माप के रप में इसका क्या कार्य है ? यह प्रसरण से किस प्रकार भिन्न है ।

2. प्रतिचयन किसे कहते हैं ? प्रतिचयन की विभिन्न विधियों की व्याख्या कीजिए । संगणना सर्वेक्षण की तुलना में, प्रतिदर्श सर्वेक्षण क्यों अधिमान्य है? व्याख्या कीजिए ।

3. प्राथमिक आंकड़ों के संकलन में किसी अनुसंधानकर्ता को प्राय: जिन समस्याओं का सामना करना पडता है उनका वर्णन कीजिए । प्राथमिक आंकड़ों के संकलन की विभिन्न विधियाँ स्पष्ट कीजिए तथा उनके लाभ और हानियाँ भी बताइए ।

4. (क) एक मोटरगाड़ी वाले ने तीन दिन, 480 कि. मी. प्रतिदिन, यात्रा की। उसने पहले दिन 48 कि. मी. प्रतिघंटे की गति से 10 घंटे यात्रा की, दूसरे दिन 40 कि. मी. प्रतिघंटे की गति से 12 घंटे यात्रा की, और तीसरे दिन 32 कि. मी., प्रतिघंटे की गति से 15 घंटे यात्रा की। उसकी ओउसत गति प्रतिघंटा ज्ञात कीजिए ।
(ख) असतत श्रेणियों के लिए समांतर माध्य की दोनों विधियों को उपयोग करते हुए निम्न समंको का समांतर माध्य परिकलित कीजिए :


5. निम्नलिखित पर संक्षिप्त टिप्पणीयाँ लिखिए:

(क) मध्यिका इकाई
(ख) ऋणात्मक वैषम्य
(ग) प्रतिदर्श विभ्रम
(घ) वर्गीकरण के उद्देश्य

IGNOU ECO-07 (July 2022 – January 2023) Assignment Questions

1. प्रतिचयन क्या है ? प्रतिचयन की विभिन्न विधियों की विवेचना कीजिए ।

2. यदि दिए गए बंटन का माध्य है 35, तो लुप्त आवृत्ति y ज्ञात कीजिए। साथ ही, बंटन के लिए माध्यिका और भूयिष्ठक की गणना कीजिए ।


3. (क) ( द्वितीयक तीयक आँकड़ों के स्रोतों पर चर्चा कीजिए । द्वितीयक आँकड़ों का उपयोग करते समय क्या सावधानियां बरतनी चाहिए ?
(ख) गुणोत्तर और हरात्मक माध्य परिभाषित करें? उनके बीच अंतर कीजिए ।

4. नौ श्रमिकों का वेतन नीचे दिया गया है :
310, 290, 320, 280, 300, 290, 320, 310, 280 |
निम्नलिखित ज्ञात कीजिए:
(क) मानक विचलन
(ख) प्रसरण

5. निम्नलिखित पर संक्षिप्त टिप्पणीयाँ लिखिए:

(क) सांख्यिकी पर अविश्वास
(ख) सांख्यिकीय व्युत्पन्न
(ग) चल माध्य
(घ) सामान्य वक्र की विशेषताएं

ECO-07 Assignments Details

University : IGNOU (Indira Gandhi National Open University)
Title :Elements of Statistics
Language(s) : English, Hindi
Code : ECO-07
Degree :
Subject : Mathematics
Course : Core Courses (CC)
Author : Gullybaba.com Panel
Publisher : Gullybaba Publishing House Pvt. Ltd.

Assignment Submission End Date-upto

The IGNOU open learning format requires students to submit study Assignments. Here is the final end date of the submission of this particular assignment according to the university calendar.

  • 30th April (if Enrolled in the June Exams)
  • 31st October (if Enrolled in the December Exams).

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