WEEK 1, HW1 (PART 1): DESCRIPTIVE STATISTICS
We start with DESCRIPTIVE STATISTICS where we simply want to see what our data set looks like. Later in the course
we move on to INFERENTAIL STATISTICS where we try to learn what our sample data can tell us abo
l. (1 0 points) X is a discrete random variable that can take values 0, 1, 2 with probabilities shown below.
Show that the family of distributions dened by f(:1:; 0)is not t2123£6t6 (i.e. show that E [h(:v)] = 0 for
all values of 0 does not imply P [h(:z
Quizs STAT 453 W/ 4/2/14
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J1; a-m (rm )" ) Br D R 91)]
1. Let Y1 < Y2 < Y3 < Y4 be order statistics of a random sample of size 4 from a distribution with pdf
z; 6) - 9,0 < a: < 9 zero CISCWhere With 0 < 9' The hypoth