ST 204
Quiz 01
Time- 35 min
Registration number:.
Answer All Questions
1. When each member of a population has an equally likely chance of being selected, this is
called:
a. A nonrandom sampling method
c. A snowball sample
b. A quota sample
d. An Equal pr
ST 204
Quiz 01
Time- 35 min
Registration number:.
Answer All Questions
1. When each member of a population has an equally likely chance of being selected, this is
called:
a. An Equal probability selection method
c. A snowball sample
b. A quota sample
d. A
ST 204
Quiz 01
Time- 35 min
Registration number:.
Answer All Questions
1. When each member of a population has an equally likely chance of being selected, this is
called:
a. An Equal probability selection method
c. A quota sample
b. A snowball sample
d. A
t-tests
The t.test( ) function produces a variety of t-tests. Unlike most statistical packages, the default
assumes unequal variance and applies the Welsh df modification.# independent 2-group t-test
t.test(y~x) # where y is numeric and x is a binary fact
ST 204
TUTORIAL 01
SAMPLING TECHNIQUES
1. A simple random sample of n = 9 hospital records is drawn to estimate the
average amount of money due on N = 484 open accounts. The sample values
for these nine records are listed in Table below. Estimate , the av
Chapter 3
Multiparameter models
Multiparameter model
Suppose = (1 , 2 ), where 1 is the parameter of interest and
2 is a nuisance parameter. Both may be vectors. A nuisance
parameter may be necessary to specify a realistic model.
Need: p(1 |y) marginal po
ST 204
Quiz 01
Time- 35 min
Answers
1. When each member of a population has an equally likely chance of being selected, this is
called:
a. A nonrandom sampling method
c. A snowball sample
b. A quota sample
d. An Equal probability selection method
2. Which
Exam
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Provide an appropriate response.
1) The government of a town needs to determine if the city's residents will support the construction
of a ne