Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University
2 Feb 2009
Due Today. From page 189, exercises 4, 5, 8, 14.
could be replaced by the sample standard deviation S , which is the squar
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 27 Mar 2009
Monday and Wednesday. Presentations by you. Exercises 4, 5, 6, or 7 from chapter 10, pages 387 389. Coming up. Presentatio
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 1 Apr 2008
When k was equal to 1, we found the least Monday. Presentations from exercises beginning squares line y = 0 + 1 x. It was a
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 16 Mar 2009
Second Test. Wednesday, 25 Mar 2009. On chapAs in the last chapter, we can have hypothesis ters 69. tests for the dierence
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 9 Mar 2009
Due Today. Page 262: 1, 2, 9, 11, 12. Due Friday. From chap. 7, p. 265, exercises 17, 18, 19. Today. Inferences for two sam
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 18 Mar 2009
Second Test. Wednesday, 25 Mar 2009. On chap- Then the least squares line that minimizes E(a, b) has ters 69. Due Friday.
Math 218 Mathematical Statistics
Second Test Answers March 2006
Assume that the percentage varies across families according to a normal distribution with unknown mean and known Problem 1. [20; 10 poin
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 13 Mar 2009
Second Test. Wednesday, 25 Mar 2009. Due Today. From chapter 7, p. 265, exercises 17, 18, 19. Due Monday. From chapter 8,
Summary of basic probability theory, part 2
D. Joyce, Clark University Math 218, Mathematical Statistics, Jan 2008
Expectation. The expected value E(X), also called the expectation or mean X , of a ra
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 6 Feb 2009
1 Due Monday. From page 229, exercises 1, 2ab, 5, to be the sample variance S 2 = n1 (Xi X)2 , although sometimes 2 is take
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 13 Feb 2009
p(1 p) is between 0 and 1 , and the maximum 1 4 4 1 occurs when p = 2 . Therefore, 2 is between 0 and 1 Friday. First test
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 23 Feb 2009
the associated level of signicance is = 0.05. For a two-sided condence interval, which is the usual Due Monday. Due: From
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University
11 Feb 2009
Due Today. From page 658, exercises 1, 3.
=
First test. Feb. 20.
1
2
n
exp
1
2 2
n
(xi )2
i=1
Next, to nd the maximum li
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University
9 Feb 2009
Due Today. From page 229, exercises 1, 2ab, 5, Intuitively, its p = 0.47, and thats the maximum
likelihood estimator. Well
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University
30 Jan 2009
Due Monday. From page 189, exercises 4, 5, 8, is understood. The letter is the Greek letter nu,
and it is often used for t
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 18 Feb 2008
Due Wednesday. Page 231: 1720, 22. Test Friday. Thru chapter 5. Next week. Begin chapter 7. Basically, it goes into detail
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University
26 Jan 2009
can come up besides these two standard types, for
instance, two- and three-dimensional values.
For next meeting. Read sect
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 28 Jan 2009
Due Friday. From page 189, exercises 4, 5, 8, 14. For next meeting. Read through section 5.3 Last meeting. Survey of the c
Math 218 Mathematical Statistics
Prof. D. Joyce, Clark University 20 Mar 2008
Second Test. Wednesday, 25 Mar 2009. On chap- sse/(n - 1) for the three unknown parameters 0 , 1 , and 2 . The first two a