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BECS-184 Assignment

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IGNOU BECS-184 July 2021 - January 2022 - Solved Assignment

Are you looking to download a PDF soft copy of the Solved Assignment BECS-184 - Data Analysis? 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 Economics, for the July 2021 - January 2022 session. The code for the assignment is BECS-184 and it is often used by students who are enrolled in the BAG, BSC (Honours), BSCG 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.

IGNOU BECS-184 (July 2021 - January 2022) Assignment Questions

Assignment One

Answer the following questions. Each question carries 20 marks

1. (a) A lead-free solder can be made using two different alloys. An important characteristic feature of a solder is its melting point, which is known to follow a Normal distribution. An experiment was conducted using a random sample of 21 pieces of solder made from the two different alloys (1 and 2). In each sample, the temperature at which each of the 21 pieces melted was determined. The mean and standard deviation of the sample for Alloy 1 were M1= 218.9ºC and S1 = 2.7ºC; for Alloy 2 the results were M2 = 215.5ºC and S2 = 3.6ºC. If it is required to test H0: µ1 = µ2 against HA: µ1 ≠ µ2, where µ stands for the population mean, what would be the value of the test statistic?
(b) Discuss two different techniques each for conducting—(i) Bivariate analysis and (ii) Multivariate analysis.

2. (a) An individual is handover a bag filled with balls of different colours. The table below gives the probability that a randomly chosen ball is of a specific colour, along with a missing probability value of picking a ball of white colour.

Answer the following questions:
(i) What value must the missing probability be?
(ii) If a ball is drawn at random from the bag, what is the probability of each of the following events?
I. It is either Blue or Red in colour.
II. It is notYellow in colour.
III. It is neither Orange nor White in colour.
IV. It is either Blue or Red or Yellow or Green or Orange or White.
(b) What are the various assumptions considered for running a multiple regression? Are these different from the ones considered under simple regression?

Assignment Two

Answer the following questions. Each question carries 12 marks.

3. (a) Consider a distribution or a data set with different values of mean, median and mode. Comment upon the shape of such a distribution in terms of the spread of the frequencies. What will be the relation between the mean, median and mode in such a case? Compare the shape of such a distribution with the one whose mean, median and mode are equal to each other.
(b)What is meant by a standard score in Statistics? What is the need to calculate such a score?

4. A research study aims at analysing the economic impact of COVID on the Indian economy. What can be some of the appropriate economic indicators in this case? Also enlist various data sources (primary/secondary) to gather data from in estimating these indicators.

5. (a) Discuss various methods of collecting data for conducting a qualitative research.
(b) To collect data for a study an individual chooses to question people coming out of a mall directly. Identify this technique of collecting data. What is the significance of employing such a sampling technique?

6. Discuss several examples of composite index numbers used as indicators of development in real life. Also write the various steps involved while constructing a composite index.

7. Attempt answering the following:
(a) Define Dispersion as a measure of spread. Discuss various measures of Dispersion.
(b) Coefficient of variance is considered a better measure of dispersion as compared to standard deviation. Do you agree? Give reason.

IGNOU BECS-184 (July 2020 - January 2021) Assignment Questions

Assignment One

1. (a) In a lab experiment, some volunteers are given dose of antibiotics and its concentration in their blood is measured (in suitable units) at one hour intervals. Consider the data below:

(i) It is believed that a linear relationship exists between these variables. Estimate the line of best fit in this scenario.
(ii) What will be the concentration post 3.5 hours? Also find out how long will it take for concentration to reach 8 units?
(b) Correlation does not imply causation. Do you agree? Give reason for your answer.

2. (a) The heights (in inches) of adult females in Australia are believed to be normally distributed with mean µ. The average height of a random sample of 25 Australian adult females is found to be 69.72 inches, and the standard deviation is found to be 4.15. Write down the confidence interval for µ at 10% level of significance.
(b) Explain the characteristics of a normal distribution, and its usage in solving statistical problems.

Assignment Two

3. (a) A study involves finding the proportion of females opting to pursue higher education in a particular area. What type of data in terms of measurement scale will need to be captured for conducting such a study? Which method of central tendency will be suitable for this study?
(b) For making comparisons between data of varying units, which method of dispersion is used? Give reason.

4. A study involves capturing the proportion of population that have undergone COVID testing in a particular district. For conducting such a study, which method of primary data collection is suitable? Briefly discuss the various stages involved in planning and organizing data collection using such a method.

5. (a) Discuss various forms of Qualitative sampling techniques.
(b) Consider a research study aimed at studying characteristics of a rare disease. For conducting this research, a researcher is likely to use which sampling technique? Give reason for your answer.

6. Differentiate between the following:
(a) Two qualitative research design methods— Case study and Participatory Action Research
(b) Type I and Type II errors. Which among them is a relatively serious one?

7. Attempt answering the following:
(a) Coefficient of variance is considered a better measure of dispersion as compared to standard deviation. Do you agree? Give reason.
(b) What are the advantages of plotting a frequency polygon over a histogram?

IGNOU BECS-184 (July 2021 - January 2022) Assignment Questions

सत्रीय कार्य 1

निम्नलिखित प्रश्नों का उत्तर दें। प्रत्येक प्रश्न 20 अंक का है।

1. क) एक लैड-फ्री सोल्डर दो अलग मिश्र धातुओं को उपयोग करके बनाया जा सकता है। सोल्डर की एक महत्त्वपूर्ण विशेषता यह है कि इसका गलनांक प्रसामान्य बंटन का पालन करता है। दो अलग मिश्र धातुओं (1 और 2) से 21 सोल्डर के दैव प्रतिचयन (सैंपल) का उपयोग करके एक प्रयोग किया गया। प्रत्येक सैम्पल में, 21 में से प्रत्येक जिस तापमान पर पिघलता है वह निर्धारित किया गया।

ख) (i) द्विचरीय विश्लेषण तथा (ii) बहुचरीय विश्लेषण करने के लिए दो विभिन्न तकनीकों पर चर्चा करें।

2. क) एक व्यक्ति को अलग-अलग रंगों की गेंदों से भरा एक बैग सौंपा गया। नीचे दी गई तालिका में विभिन्न प्रायिकताएँ दर्शायी गई हैं कि एक यादृच्छिक रूप से चुनी गई गेंद एक विशिष्ट रंग की है, साथ ही सफेद रंग की गेंद की प्रायिकता नहीं दी गई है:

उपरोक्त के आधार पर निम्न का उत्तर दें :
i) लुप्त प्रायिकता (सफेद गेंद की प्रायिकता) का मूल्य क्या होना चाहिए?
ii) यदि बैग से एक गेंद यादृच्छिक रूप से निकाली गई तो निम्न घटनाओं की क्या प्रायिकता होगी-
(I) यह नीले या लाल रंग की हो
(II) यह पीले रंग की न हो
(III) यह न ही नारंगी रंग की हो और न ही सफेद
(iv) यह या तो नीले या लाल रंग या पीले या हरे या नारंगी या सफेद हो। ।।

ख) बहुचर प्रतीपगमन को चलाने की विभिन्न मान्यताएँ क्या है? क्या ये मान्यताएँ साधारण प्रतीपगमन की मान्यताओं से अलग हैं?

सत्रीय कार्य-2

निम्नलिखित प्रश्नों का उत्तर लगभग 250 शब्दों में दें। प्रत्येक प्रश्न 12 अंक का है।

3. क) माध्य, माध्यिका और बहुलक के अलग-अलग मूल्यों वाले एक वितरण आँकड़े समूह पर विचार करें। आवृत्तियों के प्रसार के संदर्भ में इस तरह वितरण के आकार पर टिप्पणी करें। इस स्थिति में माध्य, माध्यिका और बहुलक में क्या संबंध होगा? इस प्रकार के वितरण के आकार की तुलना उस वितरण से करें जिसमें माध्य, माध्यिका और बहुलक बराबर हो।
ख) सांख्यिकी में एक मानक स्कोर (standard score) का क्या अर्थ है? इस स्कोर की गणना की आवश्यकता क्यों है?

4. एक शोध अध्ययन का उद्देश्य भारतीय अर्थव्यवस्था पर COVID के आर्थिक प्रभाव का अध्ययन करना है। इस संबंध में कुछ उचित आर्थिक संकेतक क्या हो सकते हैं? इन संकेतकों का आकलन करने से डेटा एकत्र करने के लिए विभिन्न डेटा स्रोतों (प्राथमिक/द्वितीयक) को भी सूचीबद्ध करें।

5. क) एक गुणात्मक शोध करने के लिए आँकड़े एकत्र करने के विभिन्न तरीकों पर चर्चा करें।
ख) एक व्यक्ति एक अध्ययन के लिए आँकड़े एकत्र करने के लिए एक मॉल से बाहर आने वाले लोगों से सीधे सवाल करना, चुनता है। आँकड़े एकत्र करने की इस तकनीक की पहचान कीजिए। ऐसी सैंपलिंग तकनीक लगाने का क्या महत्त्व है?

सत्रीय कार्य-3

निम्नलिखित प्रश्नों का उत्तर लगभग 100 शब्दों दें। प्रत्येक प्रश्न 6 अंक का है।

6. गुणात्मक शोध अभिकल्पना के दो प्रकारों - केस अध्ययन और सहभागिता क्रियात्मक शोध के बीच अंतर बताइये।

7. व्यावहारिक जीवन में विकास के संकेतकों के रूप में प्रयुक्त संयुक्त सूचकांकों के कई उदाहरणों की चर्चा करें।

8. प्रथम प्रकार तथा द्वितीय प्रकार की त्रुटियों के बीच अंतर बताएं। इन दोनों में से तुलनात्मक रूप से कौन-सी त्रुटि अधिक गंभीर है?

9. प्रमाप विचलन की तुलना में विचरण गुणांक अपकिरण माप (Dispersion measure) का बेहतर मापक है। क्या आप इस कथन से सहमत हैं? कारण दें।

10. आयत चित्र (Histogram) की तुलना में बारंबारता बहुभुज के अंकित (Polygon) करने के क्या लाभ है?

BECS-184 Assignment Details

  • University IGNOU (Indira Gandhi National Open University)
  • Title Data Analysis
  • Language(s) English and Hindi
  • Session July 2021 - January 2022
  • Code BECS-184
  • Subject Economics
  • Degree(s) BAG, BSC (Honours), BSCG
  • Course Skill Enhancement Courses (SEC)
  • Author Gullybaba.com Panel
  • Publisher Gullybaba Publishing House Pvt. Ltd.

Assignment Submission End Date

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).

Download Files & Sessions Details

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English Language

  • July 2021 - January 2022 20 Pages (0.00 ), PDF Format SKU: IGNGB-AS-BSC-BECS184-EN-277
  • July 2020 - January 2021 36 Pages (0.00 ), PDF Format SKU: IGNGB-AS-BSC-BECS184-EN-112

Hindi Language

  • July 2021 - January 2022 20 Pages (0.00 ), PDF Format SKU: IGNGB-AS-BSC-BECS184-HI-131

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