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Assignment 1

This is the first assignment. You are supposed to individually and without consulting anything else than your book solve the following excersizes from it: 2.8, 3.7, 3.17, and 5.8. The assignment is due 13.15 Friday Nov. 28, 2014. This is a strict deadline. Send your solutions to me (Jens Lagergren <jensl@csc.kth.se>) and Kristoffer (Kristoffer Sahlin <kristoffer.sahlin@scilifelab.se>).

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kommenterade 10 december 2014

Assignment 1 has been corrected and reported in RAPP. If you submitted solutions but you cant see the grading, I have probably not gotten them. Exeptions are Ahmed Laeeq, Johan Markdahl, David Menendez, Ayesha Tasnim and Daan Wynen. I have corrected you assignments but you are not in rapp under "statmet14" so your result have not been reported. Jens, can you add them to the course?

My notes during grading:

*Mostly trouble with 2.8 and 5.8.

* 2.8: iff requires showing both => and <=.

*3.7: Think of data as a set of observations. Lots of solutions treat the data (x,d, or whatever notation) as a single value which inhibits the conclusions one can make from the assignment, i.e. that the MAP and ML estimates agree for alpha,beta=>0.  This becomes more clear for n>1 observations, otherwise the ML and MAP is just x/1 (d/1), i.e. the data point itself.

*5.8: Use log likelihood when deriving and calculating ML estimates, lots of miscalculations has lead to misinterpretations, I have been fairly generous though.