Stats Assignment 2: Zscores & Correlation
Due: 06.13.13
40pts Total
DIRECTIONS: Answer all parts of the following questions. Please type all answers in blue
font! It will make it easier on my eyes and on your eyes.
Questions1through5correspondtothe3Scatt
Stats 1: Descriptive Statistics, Distributions & Frequencies
Due: 06/06/13
34 Points Total
DIRECTIONS: Answer all parts of the following questions. Please type all answers in blue
font! It will make it easier on my eyes and on your eyes. Also, YOU MUST sa
Stats Assignment 3: TTests
Due:
(32pts Total)
DIRECTIONS: Answer all parts of the following questions. Please type all answers in blue
font! It will make it easier on my eyes and on your eyes. Also, YOU MUST save your lab file
as: Lab1LastnameFirstname.d
ONESAMPLE INFERENCE
This is the page numbering for Confidence Intervals
1/14
Under the heading of Onesample Inference, we will study CONFIDENCE INTERVALS (ESTIMATION) and
HYPOTHESIS TESTS (SIGNIFICANCE TESTS). We will look specifically at onesample pr
ONESAMPLE INFERENCE
This is the page numbering for Hypothesis
Tests 1/15
ONESAMPLE HYPOTHESIS TESTS (testing for an unknown population mean)
A hypothesis test is a statistical procedure where we use sample data to test the
plausibility of a hypothesis (
Some Prerequisite Math Skills for STA 2023/2122
1/6
(1) Below are number lines (horizontal axes). Which ONE is correctly presented?
A.

0
B.
1
30
2
3
3
4
4
5
20
10
0
10
20
30
40
50

98
D.
2

40
C.
1
97
96
95
94
93
92
91
90
89

11
22
33
44
55
ONESAMPLE INFERENCE
Reasoning
Hypothesis Tests
1/2
INVESTIGATING AN UNKNOWN POPULATION
TALKING TO A STRANGER
is unknown.
I dont know which way the bathroom is.
Sample data is collected.
I ask someone where the bathroom is.
An estimate is created, the es
Introduction
 Subjects: Who/what we collect the data from
 Observation: The piece of information we are measuring (Units)
EX: We want to know Jonnys glucose level after he eats a candy bar S: Jonny O: Jonnys glucose level
 Population: The entire group
Homework, Creating Tables and Views
All tables are in the sql subdirectory
1. Creating and Using a View
a. Create a view named work.Phone_List containing the following columns:
Department (format=$25.)
Name (format=$25.)
Phone_Number (label='Home Phone
Homework, SQL Joins
All tables are in the sql subdirectory
1. Inner Joins
Produce a report containing Employee_Name and calculated years of service (YOS) as of
December 31, 2007, by joining orion.Employee_Addresses and
orion.Employee_Payroll on Employee_I
Homework Basic Queries
All necessary files are found in the sql subdirectory.
1.
2.
Querying a Table
a.
Write a query that displays all rows and all columns from the
orion.Employee_Payroll table.
b.
Modify the previous query and alter it so that only the
Homework, Defining Macros
(Note that the orion libname refers to the mac1 subdirectory)
Level 1
1. Defining and Calling a Macro
a. Copy the program shown below into the Editor window.
proc print data=orion.customer_dim;
var Customer_Group Customer_Name Cu
Homework, Proc SQL Additional Features
All tables are in the sql subdirectory.
1. Using PROC SQL Options and Displaying the Contents of a Dictionary Table
a. Write a query that retrieves Memname (table name) and Memlabel (description of the
table) from di
1. Using the EXCEPT Operator
Create a report that displays the employee identification numbers of employees who have
phone numbers, but do not appear to have address information. The
orion.Employee_phones table contains Employee_ID and Phone_Number. If an
Homework, Displaying Query Results
1. Enhancing Output with Titles and Formats
Use the table orion.employee_payroll
a. Select only the Employee_ID, Salary, and a new column Tax that is one third of the
salary.
b. Select only rows for which Gender=M and ma
Homework, SQL Subqueries
All tables are in the sql subdirectory.
1. Using Subqueries
The orion.Order_Fact table contains information about orders that were placed by
Orion Star Sales staff. Create a report that lists the Sales staff whose average quantity
STA5067, Advanced Data Management and Analysis with SAS
Instructor: Dr. Dan McGee ( [email protected] )
Grader: TBA (See Blackboard Page)
All contact Info on Blackboard (Instructor Info tab).
Prerequisites: STA 5066 is a required prerequisite all material fr
All of the data necessary for this assignment are found in the mac1 subdirectory
Level 1
1. Displaying Automatic Macro Variables
a. Use the %PUT statement to list all automatic macro variables in the SAS log.
Level 2
1. Using Automatic Macro Variables
a.
Simple Conditions for Inference About a Mean
1.
We have an SRS from the population of interest. There is no nonresponse or other practical difficulty.
x z*
2.
The variable we measure has an exactly Normal distribution N(
STA 2023
Practice Questions Exam 2
Chapter 7 sec 9.2
Formulas Given on the test:
Case
one
mean
one
prop.
parameter
estimator
p
standard error
x
p
p(1 p)
n
Estimate of
standard error
Sampling
Distribution
t (n1)
s
n
n
p(1 p)
n
CI:
ST:
p 0 (1 p0 )
n
Memor
Review for Exam 2
Parameters vs Statistics
Probability vs Statistics
Chapter 7
Sampling Distributions
Proportions
Sampling distribution of phat:
X is Binomial (count of successes)
distribution of values a sample
statistic takes in repeated
sampling.
STA 2023
Practice Questions
Final Exam
STATISTICAL INFERENCE TABLE: (GIVEN on the test)
Case
parameter
one mean
estimator
standard error
x
Sampling
Distribution
t (n1)
s
n
Mean of
matched pairs
difference
difference
of two
independent
means
d
xd
n
1 2
on
Review for Exam 3:
Confidence Intervals and Significance Tests for: one mean one proportion difference of two independent means difference of two independent proportions difference of two dependent means (matched pairs) Need to know: Identify which case C
Jaime Frade 589141124 Sta6206 Homework assignment 1 1. Classify the following variables: (a) The age of each person Quantitative, continuous, ordinal, ratio (b) The type of species of plants Qualitative, nominal, discrete (c) The height of palm trees in S
The Relationship Between
Temperature and the Latitude
and Longitude
and
By:
Angela Couture
Jaime Frade
Rita Argelo
Abstract
Abstract
Question:
Is there a relationship between
temperature and global coordinates? Can latitude
and longitude predict the temp
Angela Couture Jaime Frade Project 1: Cuckoo Egg Lengths Abstract Information from Internet A study by E.B Chance in 1940 called The Truth About the Cuckoo demonstrated that cuckoos return after year to the same territory and lay their eggs in the nests o
Spotted Owl Habitat Experiment
1. The two sample ttest was applied to each of the 7 columns containing data from
random nest sites observations (30 observations) and from mature and oldforests
nest sites (30 observations). Random observations were repre