DMM留学生辅导、讲解python,java,c/c++编程设计、辅导data structures

日期：2019-01-14 10:21

DMM Coursework

Space  scientists  are  on  their  way  to  study  species  on  the  planet Zorna.  Your  task  is  to  design  and  test  the  data  structures  and statistical tests  they will need when they land. A probe has  already sent back some information which will be useful.

Task 1.

The  probe  has  managed  to  tag  about  200  animals  so  the  scientists  will know each animal as an individual. There are three species: Jaffe, Direjaffe and Girow. When they land the scientists will measure the colour, height, sex  and  mass  of  each  animal  and  what  zone  they  live  in.  Zones  are locations  on  Zorna.  The  scientists  will  record  the  class,  altitude  and vegetation of each zone. Over the two weeks of the mission the scientists will  record  which  animals  attack  or  eat  which  other  animals.  Jaffe  and Direjaffe both prey on the Girow and sometimes fight each other. The time and day of each event will be recorded. Lastly the weather will be recorded,

temperature and conditions. Potentially the weather might be different in different locations. Design a data model for all of the above. Include relevant documentation in your report.

Task 2.

To test your data model, implement it as a series of data frames in R and simulate random  data  for  each  of  your  fields.  To  help,  the  probe  has  sent  back  the following (it doesn't matter what the measurement units are):

Jaffe and Direjaffe are green, blue or red. Girow are brown or green. Heights of Jaffe are drawn from a normal distribution, mean = 30, sd = 5. There is no information on the heights of the Direjaffe.

Heights of Girow are drawn from a normal distribution, mean = 14, sd = 3

Sexes are male and female.

Masses of Jaffe range from 20 to 50 with uniform distribution. Masses of Direjaffe range from 15 to 50 with uniform distribution. There is no information on the masses of Girow.

Zones are labelled A-G.

Zone classes are 1,2,3,4 and 5. This measures how rocky the environment is.

Altitudes range from 1000 to 2000. Vegetation values are 1,2 or 3.

Times are measured as morning, afternoon, evening and night. Day is

1 to 14 representing the days of the mission.

Temperatures range from 10 to 30 and conditions can be very hot, hot, mild and cool.

There is no data yet on the frequency or outcome of the predator-prey relationships.

Include your commented R code and samples of your data frames.

Task 3.

Create a bespoke statistical test to answer the question: is there a significant difference between the average height of the Jaffe and average height of the Direjaffe? Include your code and explain your answer including graphs and charts if you feel this is appropriate.

Edit your code to answer the question: is there a significant difference between the maximum height of the Jaffe and Direjaffe?

(Note that this approach to statistics is cutting edge - feel free to use it in the analysis of the data you collect for your dissertation, but don't expect your tutors to have knowledge of it!)

SUBMISSION

Your coursework needs to be submitted electronically. The deadline is 12pm on 12th Jan 2019.