Full marks: 20 Time: 50 minutes First term examination 6. If SD=7 and CV=28%, then find the AM. 5. Find the variance of first 11 natural numbers? 3. Find the mean for the series 1000, 2000, 3000… 50000. 2. The mean of 5 numbers is 50. If one of the numbers is 40, 1. For the following table, construct a frequency polygon: What is the mean of the other 4? 4. What is the median of the sample 5, 5, 11, 9, 8, 5, 8?