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Exam Questions on Basic Statistics
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Exam Questions on Basic Statistics

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  • 1. IUBAT–INTERNATIONAL UNIVERSITY OF BUSINESS AGRICULTURE AND TECHNOLOGY First term examination STA 240 Set: S Full marks: 20 Time: 50 minutes 1. For the following table, construct a frequency polygon: class frequency 5 – 10 5 10 – 15 10 15 – 20 15 20 – 25 10 25 - 30 5 2. The mean of 5 numbers is 50. If one of the numbers is 40, What is the mean of the other 4? 3. Find the mean for the series 1000, 2000, 3000… 50000. 4. What is the median of the sample 5, 5, 11, 9, 8, 5, 8? 5. Find the variance of first 11 natural numbers? 6. If SD=7 and CV=28%, then find the AM. Md. Mortuza Ahmmed