1. Qwizdom Review Questions Week 2

2. Example Exam Question, p.18 A new method of measuring phosphorus levels in soil is under consideration. A sample of 11 soil specimens is analyzed using the new method. The time series (sequence plot) for the 11 observations is presented on the next slide.

3. What can be said about the stability of this data? A)This data is stable. B)This data shows an increasing trend. C)This data shows a decreasing trend. D)This data shows a change in variation. E)This data shows a seasonal pattern.

4. True or False We can treat this data as a single population, and do things like examine the distribution using a histogram.

5. Yes or No Assuming that the data can be examined as samples from a single population, does this QQ plot indicate the population to be normal?

6. True or False If a sample of 50 men have an average height of 69 inches and a standard deviation of 3 inches, the following is a correct interpretation of the standard deviation: “The average distance between the male heights is roughly 3 inches.”