1
STS 2610 Test 2B
Spring 17
Print Name_
I will abide by the University Honor Code on this test.
Sign_
Keep your work and answers covered. For each question, choose the best answer.
Use the modified boxplot below to answer the next 4 questions.
1. The low
STS 2610 Final Exam New Problems Problem Set
Spring 17
1
Treat this list of topics and any practice problems as additional review, not as a complete representation of the questions
you will see on the exam. You are responsible for all material covered in
1
STS 2610: Quantitative Methods
Spring 2017
Organizing and Displaying Numerical Data
Open the datafile Beer Large
Lets focus on the variable Calories. We wish to create a table that summarizes the distribution of the various
numbers of calories in the di
STS 2610: Quantitative Methods
Spring 2017
Correlation
Correlation measure strength and direction of a linear relationship between two quantitative variables
Scale
Scatterplot of Age and Cholesterol (Shared)
Calculate r using StatCrunch: Stat < Summary St
1
STS 2610: Quantitative Methods
Spring 2017
Describing Data Numerically: The Interquartile Range and Boxplots
By definition the median falls in the middle of the ordered data. Therefore it divides the data into halves.
At least 50% of the measurements in
1
STS 2610: Quantitative Methods
Spring 2017
Hypothesis Testing II
We have already discussed one of the two possible types of errors that can made when a hypothesis test is
performed.
Type I Error
We also saw that the researcher controls the likelihood o
1
STS 2610: Quantitative Methods
Spring 2017
Hypothesis Testing
Statistical hypothesis
Hypothesis test
Null hypothesis (H0)
Alternative hypothesis (H1)
Example:
The 2010 Dietary guidelines recommend that the average American not exceed 2300 milligrams
1
STS 2610 Test 3B Chapters 8, 9, and 10
Spring 17
I will abide by the University Honor Code on this test.
Print Name_
Sign_
Keep your work and answers covered. For each question, choose the best answer.
1. The pulse rates for 10 adult women were as follo
STS 2610 Test IB, Fall16
Print Name_
I will abide by the University Honor Code on this test.
Sign_
Keep your work and answers covered. For each question, choose the best answer.
1. Given the following variables, which one(s) is/are categorical?
I. househo
STS 2610: Quantitative Methods
Final Exam New Topics
Spring 2017
Chapter 8: Estimating
use Statcrunch to give a point estimate along with an error margin for the point estimate
use StatCrunch to give a confidence interval
interpret the meaning of the con
1
STS 2610: Quantitative Methods
Spring 2017
Lecture: Bivariate Data / Measures of Center and Variation
Bivariate Data: Two numerical variables X and Y measured for each individual
If we think that one variable depends on the other, label the dependent va
1
STS 2610: Quantitative Methods
Spring 2017
Probability: Continuous Random Variables
We have spent a lot of time over the past 4 weeks talking about how to describe the distribution of the values of
a variable over a random sample of individuals.
We have
1
STS 2610 Quantitative Methods
Spring 2017
Sampling Distribution of the Sample Mean
The management at Burger World wants to estimate , the average service time for all drive-thru customers at its High
will be used to estimate
Point location. They take a
STS 2610 Test 3B StatCrunch
Spring 17
I will abide by the University Honor Code on this test.
Print Name_
Sign_
You are to use only StatCrunch to do the calculations. Your calculator should be removed from your desk.
1. Plant Production Weights in StatCru
1
STS 2610: Quantitative Methods
Spring 2017
Inference for the Difference between the Means of Two Populations
A common problem in statistical applications is the comparison of the means of two populations. In the
following example we wish to determine wh
1
STS 2610: Quantitative Methods
Spring 2017
Simple Linear Regression: Modeling the Relationship between Two Quantitative Variables
The Underlying Population Regression Model and Its Parameters
Suppose that the graph below is a scatterplot of (x,y) values
STS 2610 Test IB StatCrunch
Spring 17
Print Name_
I will abide by the University Honor Code on this test.
Sign_
1. Open the data Political Affiliation Samples from the StatCrunch shared data folder. Answer the following
questions for State 2.
a. Which pol
STS 2610 Test 2B StatCrunch
Spring 17
Print Name_
I will abide by the University Honor Code on this test.
Sign_
You are to use only StatCrunch to do the calculations. Your calculator should be removed from your desk.
1. A random variable X follows a norma
1
STS 2610: Quantitative Methods
Spring 2017
Organizing and Displaying Categorical Data
Open the datafile FB and T from the shared folder of StatCrunch data sets.
1. In which region does Friendly Band and Trust make most of its loans?
2. What percentage o
1
STS 2610: Quantitative Methods
Spring 2017
Inference for the Population Proportion
p
proportion of successes in population
proportion of successes in sample
Sampling Distribution of p
If a large simple random sample is selected from a population having
1
STS 2610: Quantitative Methods
Spring 2017
Introduction to Control Charts
A process is a value-added transformation of inputs into outputs.
A process can involve machines, people, measurements, and the environment. Each of these is a source of
variation
Bus 221 Notes
Legend
1. Grey: particularly important summary/review information. Most of this material will not
be presented in class as it is largely an outline of the class and students strongly prefer to
simply get started with the material in chapter
Frequently Asked Questions: A Statistical-Why? List
Q1. Why is it generally not a good idea to use statistics as the only tool for decision
making?
Statistics, like any other branch of science, provides Instrumental Knowledge. What you
do with this knowle
Math 312: Mathematical Statistics
Spring 2004
Professor:
Office:
Telephone:
Email:
Office hours:
Paul Roback
206 Old Music Hall
646-3861
roback@stolaf.edu
M 9:00 10:00, W 10:30 11:30, Th 3:30 4:30, F 9:00 10:00
(or by appointment, or drop by and Ill be ha
Introduction to Statistics
WELCOME TO MY CLASS!
Two statisticians were traveling in an airplane from Los Angeles to
New York City. About an hour into the flight, the pilot announced
that although they had lost an engine, there was no need for worry
as the
CRS 1208 INTRODUCTION TO STATISTICS
. COURSE INSTRUCTORS
Dr M Nabasirye (BSc, Mak; MSc; PhD)
Mr T Odong (BSc Agric, Mak; MSc; PhD)
4. COURSE DESCRIPTION:
The course introduces the basic statistical concepts and methods and their use in agriculture. It cov
Chapter1:IntroductiontoStatistics
OK,Itoldyouthatthisisacourseincommunication.Likeanylanguagecourse,youregoingto
havetolearntospeakthelanguage.Preparetomasteralotofjargon!
Datum Asinglemeasurementorobservation,commonlycalledascoreorarawscore.
Data
Pluralo
Differences Between Statistical Software Packages
( SAS, SPSS, and MINITAB )
As Applied to Binary Response Variable
Ibrahim Hassan Ibrahim
Assoc. Prof. Of Statistics
Dept., of Stat., & Math.
Faculty of Commerce, Tanta University
I think that, in general,
TWO FAVORITE STATISTICAL REFERENCES
Presentation of results of statistical analyses in a research paper comes down to
two simple questions expressed in an old Bob Seger song, What to leave in, what to
leave out. The Guide to Authors for many journals offe