1. What is economics?
2. What do you understand about statisties?
3. What is statistics in plural sense? Give some of its main characteristics,
4. Whal are the major drawbacks of statistics?
5. How do you relate the importance of statistics in real life?
6. What is data? Whal arc 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 sccondary data?
10. What is census? What arc its merits and demerits?
11. What is sample and how is it different from census survey?
12. What is random sampling? What are its merils and demerits?
13. What is a non sampling error? How is it rcctificd?
14. What are the different bases of classification of dora?
15. What is variable? What is the difference between discrete and continuous variable?
16. How inclusive'scries 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 table?
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 and ogive?
Answers
Answer:
1- Economics is the study of how humans make decisions in the face of scarcity. These can be individual decisions, family decisions, business decisions or societal decisions. ... Scarcity means that human wants for goods, services and resources exceed what is available.
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- 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- It keeps us informed about, what is happening in the world around us. 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.
6- The sources of data can be classified into two types: statistical and non-statistical. Non-statistical sources refer to the collection of data for other administrative purposes or for the private sector.
7- There are three basic ways of collecting data: (i) Personal Interviews, (ii) Mailing (questionnaire) Surveys, and (iii) Telephone Interviews. This method is used when the researcher has access to all the members. The researcher (or investigator) conducts face- to-face interviews with the respondents.
8- A good questionnaire consists of clear and concise questions, which the respondents can understand and respond immediately. Reliable design: Surveys conducted with a meaningful questionnaire are entitled to collect only valid and quality data that can be reproduced at any time.
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- Merits of a Census Investigation
Intensive Study – Under census investigation, you must obtain data from each and every unit of the population. ... Reliable Data – The data that a statistician collects through a census investigation is more reliable, representative, and accurate.
11- In a census, data about all individual units (e.g. people or households) are collected in the population. In a survey, data are only collected for a sub-part of the population; this part is called a sample. These data are then used to estimate the characteristics of the whole population.
12- Random samples are the best method of selecting your sample from the population of interest. The advantages are that your sample should represent the target population and eliminate sampling bias, but the disadvantage is that it is very difficult to achieve (i.e. time, effort and money).