China Ex-Food and Drug Chief Executed
STAT 1301
Probability & Statistics
Lecture 15
Lecture 15
BEIJING China 2007 executed the former
head of its food and drug watchdog who had
become a symbol of the country's wideranging problems on product safety.
"Th
STAT 1301
Probability & Statistics
Lecture 16
Lecture 16
Jointly Distributed
Random Variables
Introduction
Joint pmf
Many random variables are naturally related to
each other.
Forecast and actual weather;
Height and weight;
lifetimes of a system and a
STAT1301 assignment 4 remarks
8. Most students know that the independence of two random variables also requires the support
to be independent of each other. Most could get Cov(X, Y) = E[XY] E[X]E[Y] and = Cov(X,
Y)/(sd(X) sd(Y).
11. Some students have dif
Remarks on STAT1301 assignment 3
*Q4. Most students get c correctly. Some make careless mistakes on E(X) or Var(X). Most
students know it is easier to calculate Var(X) by E(X2) E(X)2
*Q7. Most students get the probability of same colour = 5/10 4/9 2 = 4/9