Section – A: I. Answer any ten of the following questions. 1. Give Boddington’s definition of Statistics. 2. Define an attribute. 3. What is meant by statistical enquiry? 4. Define sampling. 5. Define frequency. 6. What is tabulation of the data? 7. Mention a type of one dimensional diagram. 8. Name the graph used to locate median. 9. Find mode for the following data: 3, 4, 5, 5, 6, 8, 5, 7, 5, 5, 8, 5, 5, 4, 5. 10. If SD = 4 cms, find variance. 11. What is causation? 12. Write the co-ordinates of the point of intersection of the two regression equation. 13. What is interpolation? 14. Write the sample space when two coins are tossed once. 15. What is the value of E(8), if 8 is a constant.
Section – B: II. Answer any ten of the following questions. 16. Mention two functions of Statistics. 17. What is meant by nominal and ordinal scales? 18. Mention the sources of secondary data. 19. Write two causes of sampling errors. 20. Write down the types of classification. 21. Find frequency density for the following data. 22. Mention two needs of diagrams. 23. Write down the two limitations of diagrams and graphs? 24. If sum of 15 observations is 450. Find its mean. 25. For the following data compute coefficient of range. Height (cms): 160, 158, 159, 165, 148, 139, 142, 155. 26. Draw a scatter diagram to show that there exists perfect negative correlation between two variables.
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