1.What is the mode of the following numbers?
–9, 5, 3, –1, 3, 1, –2
2.Given that the mean of a set of data is 25 and the standard deviation is 3, what would be the coefficient of variation?
3. Find the median for the following data.
6, 7, 4, 5, 3, 7, 4
4. What is the mean of the following numbers?
–10, –7, –3, –2, 2
5. If the mean of a set of data is 23.00, and 10.00 has a z-score of –1.30, then the standard deviation must be:
6. If a set of 16 numbers has standard deviation 9, then what is its variance?
7. If a set of data has 49 points and variance 36, then what is the standard deviation?
8. If a student scored 74 points on a test where the mean score was 80 and the standard deviation was 6. What was the student's z-score?