Announcements -> Some Sample Final Exam Questions
The final exam will contain 12-15
questions identical to are very similar to the following. Some of these questions will be explicitly
done using Excel.
- Explain what an expectation value is and how that forms the basis for estimating statistical probabilities.
- I wish to give 15% of my class and A on a midterm exam but I also want those students to get more than
87% on the midterm exam. My exam has an average score of 79%. What must the standard deviation on my exam be
in order to meet my goals?
- Be prepared to explicitly compute the value of
chi^2 given some data pertaining to rolling dice
- Be prepared to explicitly calculate doubling times from exponentially growing data and to extrapolate that data to future times.
- Know how to apply the two way chi2
statistic.
- Review estimation techniques.
- Explain why, in the longer run (e.g. greater than 100 years) methane is likely to be the dominant greenhouse gas in the Earth's atmosphere
- Explain why the "hockey stick" diagram is not particularly compelling evidence that supports the
case for global warming.
- Physically explain how the presence of a planetary atmosphere leads to a "greenhouse" effect.
- Explain why hurricane "statistics" are a poor indicator of global climate change.
- Explain why an estimate of the demographic potential of a species, k, provides an important indicator of how habitat loss can be used to determine the decline in species population
-
- Why does water vapour act as the primary greenhouse gas on the Earth?
- Explain the concept of density-dependent lag time
in predator prey relations.
- What is the principle difference between logistic growth and pure exponential growth.
- Explain how the Lotka-Volterra model predicts cycling between prey and predator relations. Under what conditions can equilibrium (or temporary equilibrium) be reached.
- Explain how the concept of predator "handling time" acts as a feedback that can control prey density.
- Explain how the KS tests works and why it is not
sensitive to the particular details of the statistical distribution of the sample.
- Be prepared to use Excel to generate a KS test
comparison between a data set and a model Gaussian
distribution.
- In calculating the effects of habitat loss on a species, three critical variables are used: p, h and k. Explain what each of these are and which of these there is the most important to accurately measure.
- Briefly describe some techniques you can employ when you are working with noisy data
- Explain some of the difficulties associated with producing an accurate estimation of the projected US population in the year 2050.
- If each step I take is 2 feet and I take 1600 steps, each one in a random direction, on average, how far have I moved from my point of origin?
- Explain how the central limit theorem helps show the statistical power of independent and random sampling of some parent population.
- Explain why finite age effects (the W parameter) have such a strong effect on the crash rate (e.g. negative growth rate) of mammalian populations
- What assumptions need to be made to treat observed data as a Poission distribution?
- On average, 4 dead armadillos appear in every 1 mile of Texas highway. What is the probability of there being 6 dead armadillos in one mile of Texas highway.
- Summarize why energy production is our greatest environmental problem to solve in the near term.
- What is the value of using statistics to assist in building and testing models?
- Explain why this problem can't be solved using
Poisson Statistics:
Your sailing out on Lake Memphremagog (yes its a real place). Your sailing from South to North in order to become an illegal alien in Canada. Your also a technogeek and are taking data on the wind speed per mile. Here is your data:
* First Mile: speed = 10 mph
* Second Mile: speed = 7 mph
* Third Mile: speed = 14 mph
* Fourth Mile: speed = 17 mph
* Fifth Mile: speed = 9 mph
Your non-technogeek sailing companion makes a bet with you that the wind speed between mile 8 and 9 will be 17 mph. What is the probabilty that they will win this bet?
Your sailing out on Lake Memphremagog (yes its a real place). Your sailing from South to North in order to become an illegal alien in Canada. Your also a technogeek and are taking data on the wind speed per mile. Here is your data:
* First Mile: speed = 10 mph * Second Mile: speed = 7 mph * Third Mile: speed = 14 mph * Fourth Mile: speed = 17 mph * Fifth Mile: speed = 9 mphYour non-technogeek sailing companion makes a bet with you that the wind speed between mile 8 and 9 will be 17 mph. What is the probabilty that they will win this bet?