B AD 6243: Applied Univariate Statistics
Assignment # 2
Due Date: October 3, 2016
Assume you are involved in a study that examines the efficacy of a vocational training program for
at-risk youths You have collected data from a random sample of 1000 subjec
Drug testing example for conditional probability
Suppose that a drug test for an illegal drug is such that it is 98% accurate in the case of a
user of that drug (e.g. it produces a positive result with probability .98 in the case that the tested
individua
Some well-known difference equations and their equilibria
NAME
Arithmetic
sequence
EQUATION
x = d
EQUILIBRIA
none
STABILITY
A = 0 if
R 1
stable if
xn +1 = xn + d , ( d 0 )
xn = x0 + d n
Geometric
sequence
x = k xn
xn +1 = R xn , ( R = 1 + k )
solution: xn
Linear Regression and Correlation Notes
Suppose there is a data set of n data points (x i , y i ) where you have plotted these using a scatter
plot and it appears that a linear relationship between them is reasonable. Then the least-squares
line (regressi
MATH 151.003
Section 58 Compound Events
and the Laws of Probability
4/4/2006
Compound Events
Example: (at least) 2 different blood type classifications ABO and Rh-antigen factor
Description:
Notation:
Venn Diagrams:
page 1 of 4
MATH 151.003
Section 58 Com
Name:
TA:
Score:
/36
Psychology 2003Introduction to Statistics
Group Quiz 5
For each of the questions, do the following:
1.
2.
3.
4.
State the statistical hypotheses
Compute Zobt and look up pobt
State the critical Z and p values
Make a conclusion
1. Jack
Name:
TA:
Score:
/30
Psychology 2003Introduction to Statistics
Group Quiz 4
For each of the questions, do the following:
1.
2.
3.
4.
State the statistical hypotheses
Compute Zobt and look up pobt
State the critical Z and p values
Make a conclusion
1. Jack
Name:
TA:
Score:
/55
Psychology 2003Introduction to Statistics
Individual Quiz 2
1. Plot the dataset using the data listed (6 points).
X
15
2
7
4
8
4
12
12
8
6
13
5
11
7
6
2
8
5
9
13
10
Y
4
0
0
5
10
2. Compute the correlation between X and Y (14 points).
Name:
TA:
Score:
/20
Psychology 2003Introduction to Statistics
Group Quiz 3
Section 1. Z score questions
The mean IQ for all people is 100 with a standard deviation of 15. Also, there are 312,351,445 people in the
U.S. Use that information to answer the f
Name:
TA:
Score:
/40
Psychology 2003Introduction to Statistics
T Tests
For each of the following questions, be sure to
1.
2.
3.
4.
5.
State the statistical hypotheses,
Compute the t,
State the critical t and p values,
Compare tcrit to tobt , and
Make a co
Name:
TA:
Score:
/25
Psychology 2003Introduction to Statistics
t statistic and r test
For each of the following questions, be sure to
1.
2.
3.
4.
5.
State the statistical hypotheses,
Compute the t,
State the critical t and p values,
Compare tcrit to tobt
Name:
TA:
Score:
/40
Psychology 2003Introduction to Statistics
T Tests
For each of the following questions, be sure to
1.
2.
3.
4.
5.
State the statistical hypotheses,
Compute the t,
State the critical t and p values,
Compare tcrit to tobt , and
Make a co
Names:
TA:
Score:
/60
Psychology 2003Introduction to Statistics
Group Quiz 1
For each of the following questions, use the following dataset:
6 6 8 11 6 6 11 9 12 14 8 12 13 10 8 8 10 8 6 14
1. Plot the data using the most appropriate frequency plot, assum
Name:
TA:
Score:
/20
Psychology 2003Introduction to Statistics
Individual Quiz 1
1. Compute the range, variance, and standard deviation for the following dataset (7 points):
434231253
2. Add 10 to each of the scores in the previous question. What is the n
z-score of 1.29 on the table it shows a score of .0985 which is
larger than .05 so the hull is rejected.
the zscore is -.6495 on the table its .2611 which is also larger
than .0525.
Name:
Psychology 2003Introduction to Statistics
Practice Exam, Form A
Short Answer (10 pts each)
For each of the following questions, be sure to
1. State the statistical hypotheses,
2. Compute the Z and p values,
3. State the critical Z and p values, and
Name:
TA:
Score:
/30
Psychology 2003Introduction to Statistics
Bob wants to determine whether his homemade balding therapy works. Suppose the proportion of missing
hair among middle aged men is = .16 with a standard deviation of .08 (i.e., = .08).
1. Supp
Dustin Fife
1/2
Writing Assignment
Data Collection and Report
The best way to learn statistics is to practice doing data analysis with something that you are interested
in. The purpose of this activity is to give you a chance to collect data on something