Introductory Statistics Midterm 1 Sheet. Intense Cogitation http:/intensecogitation.info
Chapter 1
Experimental units = people / units / light bulbs, Population = all measurements, Sample = subset
Variable = characteristic that varies over time, Univariat
Sampling and Experimental Design
A maker of fabric for clothing is setting up a new line to finish the raw fabric.
The line will use a dyeing cycle time of either 30 minutes or 40 minutes; and a
temperature of either 150 or 175 Celsius. An experiment will
Section 3.2
Sampling
Population
Sampling: SRS, Stratified, Multistage
Observational Study
Experimental Study
Examples
Government: The average age of people in the
civilian labor force.
Auto Maker: The percent of adults aged 18-35 recall
seeing TV commer
3.1. Design of Experiments
In an experimental study, we do something to
people, animals, or object in order to observe the
changes in responses.
The way how to carry out an experiment is called
experimental design.
Basic Vocabulary
Experimental units are
MATH 355
Practice Problems on Regression
Reading ability and IQ A study of reading
ability in schoolchildren chose 60 fifth-grade
children at random from a school. The
researchers had the children's scores on an IQ
test and on a test of reading ability.
a
Regression
Correlation measures the direction and
strength of the linear relationship between
two quantitative variables.
MATH 355
Association & Causation
Association does NOT imply causation.
High correlation does not mean causation.
Lurking variable
Chapter 5
Section 5.1
Distribution of a Sample Mean
Section 5.2
Binomial Distribution and Normal Approximation
Section 5.2
Binomial Random Variable
What is the probability that you would get 6 heads
out 15 tosses?
What is the probability that you would ob
Chapter 5
Section 5.1
Distribution of a Sample Mean
Section 5.2
Binomial Distribution and Normal Approximation
Section 5.1
Population Distribution
The heights of college students are normally
distributed with = 64.5 and = 2.5.
Let be the height of a ran
Chapter 6
Section 6.1
Estimating : One-sample Z- confidence interval
Section 6.2
Test of Significance: One-sample Z-test
Section 6.3
Use and Abuse of the Test
Section 6.4
The Power of the Test
Hurlee Gonchigdanzan
Elementary Statistical Methods
1
Sect
Chapter 6
Section 6.1
Estimating : One-sample Z-confidence interval
Section 6.2
Test of Significance: One-sample Z-test
Section 6.3
Use and Abuse of the Test
Section 6.4
The Power of the Test
Hurlee Gonchigdanzan
Elementary Statistical Methods
1
Secti
Chapter 6
Section 6.1
Estimating with confidence
Section 6.2
Test of Significance
Section 6.3
Use and Abuse of the Test
Section 6.4
The Power of the Test
Hurlee Gonchigdanzan
Elementary Statistical Methods
1
Section 6.4
Hypotheses Testing
A consumer g
Chapter 6
Section 6.1
Estimating with confidence
Section 6.2
Tests of Significance
Section 6.3
Use and Abuse of the Test
Section 6.4
The Power of the Test
Hurlee Gonchigdanzan
Elementary Statistical Methods
1
Section 6.3
-test
Carrying out a test of s
Lets practice
1.
2.
Suppose that P-value of a test is 0.12. Would you reject the null hypothesis?
Suppose that the p-value of a test is .07. Would you reject Ho?
TRUE
a.
b.
c.
or FALSE
Increasing the confidence level results a larger interval?
Increasing
Elementary Statistical Methods
Hurlee Gonchigdanzan, Ph.D.
Professor of Mathematics
Department of Mathematical Sciences
University of Wisconsin- Stevens Point
Chapter 1
Introduction
Data Set, Categorical and Quantitative variables
Section 1.1
Displaying
MATH 355
Practice Problems for Chapter 1
1.
The population of the United States is
aging, though less rapidly than in other
developed countries.
Here is a stemplot of the percents of
residents aged 65 and over in the 50
states, according to the 2000 censu
Basic statistics formulas
Creating a list of stats formulas used on your course is a good aid for exam revision. We
have compiled a list of commonly used formulas in an introductory course involving
statistics which is in pdf format for printing.
A more c