Binomial Distribution
Application
Summary
HW
Binomial Distribution
Application
Summary
HW
First Clicker
Lecture 9: Binomial distribution
What is the probability that a standard normal random
variable takes on a value great than 0.95?
Zhiyun Gong
A. 1.645
Lab Practice 2 for Hannah Friedman (2204329). LE 1
Practice
1.
Load up the present day data with the following command.
source("http:/www.openintro.org/stat/data/present.R").The data are stored in an R data
frame called present.
2.
What are the variable (
Basics of Statistics
Describing Variables
Categorical Variables
Graphs
HW
Basics of Statistics
Describing Variables
Categorical Variables
Graphs
HW
First Clicker
Which of the following statements are false regarding the
syllabus?
Lecture 2: Describing and
Probability Basics
Working with Probabilities
Applications
Probability Basics
Working with Probabilities
Applications
Clicker
Policy makers are concerned with the rising cost of undergraduate
education, and they want to estimate how much students are
spen
Social psych 9-19-2016
What is an attribution?
Is an explanation for behavior
Answers the WHY?
Will come up with reasons or explanations even if they arent right
o Want to feel like world makes sense
Explaining behavior helps navigate situation
Is us
Academic Misconduct SP16
Consent
* 1. This survey will collect data from you regarding demographic information, academic information, and your
history of academic misconduct. This survey is completely anonymous - nobody can trace responses back
to a speci
Position
Histogram vs Boxplot
Associations
Figures
HW
Position
Histogram vs Boxplot
Associations
Figures
HW
Clicker
208 Emory students
reported the typical
weekly amount of
time they spent on
extracurricular
activities (in hours).
Which of the following s
Social psych 9-21-2016
100 points
Multiple choice, matching, fill in the blank, true/false, short answer
Chapters 1-4
Study guide and practice test on blackboard- CHECK WHEN PRACTICE TEST IS UP
Dont need perfect prose in short answer questions: bullets ar
Social Psych 8-29-2016
RSP:
Doesnt need to be 5 pages
Most responses are between 1 and 3 paragraphs but can write more than that
Want complete response
To see if read and thought about reading and question
What is social psychology?
Social psychology is
Mean, standard deviation, and variance
Complement rule
multiplication rule for independent events
addition rule for union of two events
Mean of a random
variable with a
discrete probability
distribution
Standard deviation of sampling distributions for
sam
Estimate simple linear
regression equation
The estimated
regression line
always passes
through the mean
of x and y
Relationship
between slope
and intercept
Residual of
regression
model
The standard deviation of
the residuals, labeled as
residual standard
Hypothesis test to; a
CI for a proponjon z proportion uses different
SE than Cl
C! and hypothesis
test for a mean
C! for a difference in
two proportlons The test and die (1 use
Hypothesis test of different se calculations
two proportions
This is 1e se and
Types of Studies
Observational Studies
Experiments
Summary
Types of Studies
Observational Studies
Experiments
Summary
Clicker
This is data on the number of alcoholic beverages consumed last
Saturday night by 208 QTM 100 students in the Spring of 2013.
Lec
2204329
LE 1
Project Proposal
1. What is your academic misconduct outcome of interest (or your
response/dependent variable)?
My academic misconduct outcome of interest is whether or not a student has
accessed information on a smart device (when prohibite
QTM 100 9-19-2016
Multifactor experiment
Categorical explanatory variables in an experiment may be referred to as factors.
Sometimes it may be of interest to simultaneously evaluate the effect of multiple
factors
Blocking
Creates two groups that are si
Article
Correlation
The Regression Line
Inference
HW
Lecture 22: Correlation and Simple Linear
Regression
Rebecca Roberts
QTM 100
November 17th, 2015
QTM 100: Lecture 22
1 / 40
Article
Correlation
The Regression Line
Inference
HW
OUTLINE
Correlation Examp
Overview
Data
Practice
Clicker
I used ANOVA to determine if exam 2 grade varies by year in
school (freshman, sophomore, junior, or senior).
Which of the following is false?
A.
222.38 = 14.9 is the estimate of the standard deviation of
exam 2 grade within
Data
CI for d
Test for d
HW
Clicker
A Type II error is possible
A. when we reject H0
B. when we fail to reject H0
C. either
D. neither
QTM 100: Lecture 17
1 / 27
Data
CI for d
Test for d
HW
Lecture 17: Inference for Dependent Means
Rebecca Roberts
QTM 100
2
test
Associations
Alternative Tests
HW
Clicker
A survey about participation in Greek life is administered to
college students in GA. Which of the following would be the
correct set of hypotheses to determine if the proportion of
Emory students that part
CI vs Test
p-values
Testing Considerations
HW
Clicker
Suppose I performed a hypothesis test at the = 0.01 level of
significance about the average GPA of Emory students as follows:
H0 : = 3.55 vs Ha : 6= 3.55. The test yielded a p-value of 0.03.
Using the
Review
Data
CI for p1
p2
p 1 = p2 ?
HW
Clicker
A two-sample t-test was conducted at the = 0.05 level of
significance to determine if there is an association between
between degree of psychopathy and whether or not a prisoner was
able to maintain employmen
MLR, continuous
Data
One-way ANOVA
Multiple Comparisons
Two-way ANOVA
HW
Clicker
How would I estimate FWTr
for a 7 year old with a lead
blood level of 20g/dL?
A. 34.71 0.297+2.5820
B. 34.71 0.2920+2.587
C. 2.58+34.717 0.2920
D. 2.58+34.7120 0.297
E. 34.71
Data
Variances =?
6= Variances
= Variances
HW
Clicker
The t distribution is centered at
A. 0
B. 1
C. the degrees of freedom
D. need more information to determine
QTM 100: Lecture 18
1 / 31
Data
Variances =?
6= Variances
= Variances
HW
Lecture 18: Inferenc
Applications
Assessing Normality
Binomial Distribution
Application
Summary
HW
Clicker
Scores on the verbal section of the SAT have a mean of 500 and a
standard deviation of 100. Scores are normally distributed.
What proportion of verbal SAT scores are hig
Models
Assumptions
Prediction
Data
MLR, continuous
MLR, categorical
HW
Clicker
Population regression model:
FWTr = 0 + 1 Ld73
What is the estimated
regression equation?
A. y =
0.42 + 64.6 Ld73
B. y = 64.6
0.42 Ld73
C. y = 4.00 + 0.12 Ld73
D. y = 16.1
QTM
Statistics 8-29-2016
Variables:
- Quantitative:
o Discrete
o Continuous
Use graphs like dot plots, stem and leaf, and histograms
Bars should touch each other when using histograms in
continuous variables
Cant give specific numbers when looking at
histo
Statistics 8-31-2016
Lecture 3: Summarizing Quantitative Variables
Dot plots, stem and leaf are used for small data
Histograms are used for large data
Describing the shape of distribution:
Histograms can be used to understand the distribution of data and
QTM 100 9-12-2016
Percentiles:
Commonly referred to percentiles include:
o The median (50th percentile)
o The first quartile (25th percentile, Q1)
o The third quartile (75th percentile, Q3)
Interquartile range:
IQR is the distance between the 3rd and 1s
1
vs r
Residuals
Sums of Squares
Models
Assumptions
HW
Clicker
What is your best guess of the
correlation between x and y ?
y
A.
1
B.
0.7
C.
0.2
D. 0
x
QTM 100: Lecture 23
E. 0.2
F. 0.7
G. 1
1 / 40
1
vs r
Residuals
Sums of Squares
Models
Assum
Stat 9-14-2016
Types of studies
Experimental study:
o Subjects are randomly assigned to experimental conditions and then the
response variable or outcome of interest is observed. The experimental
conditions can be called treatments.
Observational study: