down in his/her notebook.)
Attempt all questions. Use separate sheets to solve the worksheet.
Unit 1: Introduction (Economics), Unit2: Collection, Organisation and Presentatio
of data
1. What is economics?
2. What do you understand about statistics?
3. What is statistics in plural sense? Give some of its main characteristics
4. What are the major drawbacks of statist's
5. How do you relate the importance of statistics in real life
6. What is data? What are the two sources of data?
7. What are the different modes of collection of data?
8. What are some of the important qualities of a good questionnaire
9. What are some of the sources of secondary data?
10. What is census? What are its merits and demerits
11. What is sample and how is it different from oensus survey
12. What is random sampling? What are its merity and deterits
13. What is a non sampling error? How is it rectified
14. What are the different bases of classification of clitan?
15. What is variable? What is the difference betweeg discrete and continuous variablen
16. How inclusive series is different from exclusive series in frequency distribution
17. Explain the concepts of frequency, class interval, class limits, and mid values of
frequency distribution.
18. What are some of the important elements of a ble?
19. What is bar diagram? Give the difference between simple and multiple bar diagrams,
20. What is pie diagram? Explain the method of its construction,
21. What do you meant by histogram, frequency polygon, frequency curve und ogive?
Answers
Answer:
1.The branch of knowledge concerned with the production, consumption, and transfer of wealth.
2.Statistics is the study and manipulation of data, including ways to gather, review, analyze, and draw conclusions from data. The two major areas of statistics are descriptive and inferential statistics. Statistics can be used to make better-informed business and investing decisions.
3. In plural sense the term of statistics refers to numerical statement of facts relating to any field of enquiry such as data relating to production, income-expenditure ,population ,price etc. in other words the term statistic in plural sense referred to numerical data or statistical data.
4.The major drawbacks of statistics are as follows:
1)Statistics deal with groups and aggregates only.
(2) Statistical methods are best applicable to quantitative data.
(3) Statistics cannot be applied to heterogeneous data.
(4) If sufficient care is not exercised in collecting, analyzing and interpreting the data, statistical results might be misleading.
5.Statistics are important because today we live in the information world and much of this information's are determined mathematically by Statistics Help. It means to be informed correct data and statics concepts are necessary. They use their statistical skills to collect the relevant data.
6.The sources of data can be classified into two types: statistical and non-statistical. Statistical sources refer to data that is gathered for some official purposes, incorporate censuses, and officially administered surveys.
7.The top six data collection methods:
-Interviews.
-Questionnaires and surveys.
-Observations.
-Documents and records.
-Focus groups.
-Oral histories.
8.Essentials of a good questionnaire:Following are the essentials of a good questionnaire:
1. Limited number of questions:The number of questions should be limited as far as possible. Normally fifteen to twenty questions are sufficient enough for making the required enquiry.
2. Simplicity:The language of the questions should be simple and easily understandable. It should be clear and not vague. It should not convey two meanings.
3. Logically arranged:The questions should be arranged logically. Ther should be a proper sequence of the questions.
4. Related to the points:Questions should be related to the point. They should not be irrelevant.
5. Avoiding personal questions:Personal questions should be avoided as far as possible. For example, questions about income, volume of sales etc. should not be asked.
9.Sources of secondary data information collected through censuses or government departments like housing, social security, electoral statistics, tax records,internet searches or libraries,GPS, remote sensing,km progress reports.
10.Census arrangement applies to the whole inventory of a universe. creation may be an area, an assortment of individuals or a particular location through which we accumulate the data.
The advantages of the census method are:
-It is trustworthy and reputable.
-It can give the correct estimation of some produce and yield, the population of particular age groups, their associations by sex, institutional knowledge, etc.
Disadvantages of the census method are Census can require a lot of time to providereports and also huge capital.Every segment or article of the population has an identical probability of being chosen.