IGNOU ECO 07 ELEMENTS OF STATISTICS IMPORTANT QUESTIONS

IMPORTANT QUESTIONS

ECO 07

1. Write a short note on :

  1. Pie Chart
  2. Histogram
  3. Law of statistical Regularity
  4. Multivariate Frequency Distribution
  5. Tabulation
  6. False Base Line
  7. Distrust Statistics
  8. Personal interveiwing


2 a) Explain various parts of statistical table.

b) State briefly the objectives of classifications.



3 a) Explain the method of Karl Pearson's co-efficient of Skweness.

b) State the guidelines that should be kept in mind while preparing diagram.




4. What is class interval? How do you determine the magnitude of the class intervals and class limits?



5. What do you mean by non random sampling, random sampling, and stratified sampling? Explain with the help of suitable examples.



6. Explain the steps involved in a statistical survey starting from 'defining the problem' to  'writing the report'. 




7. What are the main sources of secondary data? What precautions should be observed in making use of secondary data?



8. a) Explain demerits of Lorenz curve.

b) What is sampling? Explain briefly various methods of sampling.



9. Distinguish between biased and unbiased errors. Discuss the method of estimating these errors both absolutely and relatively.



10. Define statistics. Discuss the various functions of statistics.



11. Distinguish between:

  • One dimensional diagram and two dimensional diagram
  • Primary and secondary data
  • Discrete and continuous variations
  • Schedule and Questionaire
  • Statistical error and mistake
  • Bar diagram and pie diagram
  • Ratio and percentage
  • Mean and mode
  • Lower quartile and upper quartile
  • Dispersion and skweness
  • Quartiles and deciles
  • Harmonic mean and geometric mean
  • Histogram and historigram



12. Practical:


Mean, Median, Mode, Histogram, Mean deviation, Co-efficient of variation, Standard deviations, Gain ( changes in gain), Profit/loss, Total absolute error, Cumulative Frequency curve, Co-efficient of skewness, Arithmetic mean, Pie diagram, Harmonic mean, Central tendency, Dispersion, Skewness.



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