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Exam Questions on Basic Statistics
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Exam Questions on Basic Statistics

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  • 1. INTERNATIONAL UNIVERSITY OF BUSINESS AGRICULTURE AND TECHNOLOGY Quiz examination STA 240 Set: X Full marks: 100 Time: 50 minutes1. What are the differences between correlation and regression?2. Give examples of the following: a) Regression b) Positive correlation c) Negative correlation d) Zero correlation3. Interpret the following results : a) r = 0.79 b) r = 0.65 c) r = 0.34 d) r = 0.184. Let X=fertilizer, Y=production of rice. X Y 1 4 2 5 3 6 a) Find the correlation coefficient, r. b) Interpret the result. c) Fit a regression line between X and Y. d) Interpret the result. e) When X=10, what will be the value of Y? Md. Mortuza Ahmmed