Katerina Ramos
BST322
Prof. Chuck Stewart
22 April 2016
Week 3: Discussion 1
To create a cross tabulation table, we should input all the data from figure 8.2 on page 174 into
statcrunch. Pick contigency table, then pick with summary, with 72 hours and 96
Week 4 Assignment
1.
For each correlation coefficient below, calculate what proportion of variance is shared by the two
correlated variables:
a.
b.
c.
d.
2.
For each coefficient of determination below, calculate the value of the correlation coefficient:
a
Katerina Ramos
BST322
Prof. Chuck Stewart
07 April 2016
Discussion 2/ Week 1
Contingency table results:
Rows: worknow
Columns: poverty
Cell format
Count
(Row percent)
(Column percent)
(Percent of total)
Work now
No
% within work now
% within poverty
% of
Week 3
p-values
The calculated probability values
corresponding to a particular test statistic
given some set of circumstances
Sample size
Degrees of freedom
Etc
Calculated for us by SPSS
P<0.05 generally considered significant
Corresponds to alpha
Katerina Ramos
BST322
Professor Chuck Stewart
28 April 2016
Given the data presented in Discussion Question 1 for this week, determine the cholesterol level of
someone who drank two and a half cups of coffee a day. To get the answer, plot a regression lin
Katerina Ramos
BST322
Professor Chuck Stewart
28 April 2016
A study from a Colombian research center is about to publish a pilot study regarding a new coffee plant
that they believe can reduce total cholesterol in humans. They gave increasing doses (cups
Katerina Ramos
BST 322
Professor Chuck Stewart
07 April 2016
Discussion 2; Week 1
Question 1:
What does the table show you about poverty and work status?
Contingency table results:
Rows: poverty
Columns: worknow
Cell format
Count
(Row percent)
(Column per
1.
BST 322 Week 2 Assignment
What is the probability of rolling a four in the gambling dice game of craps (given two six sided
dice)? What is the probability that a player can roll a four 3 times in a row (assume that rolling the
dice each time does not a