Chapter 3. Producing Data
Sources of Data

Anecdotal data individual cases, which often come to our
attention because of being striking in some way. Theses cases are
not necessarily representative of a larger group of cases
Examples: A friend tells you s
Chapter 4. Probability: The study of Randomness
Randomness
We call a phenomenon random if individual outcomes are
uncertain but there is nonetheless a regular distribution of
outcomes in a large number of repetitions.
The probability of any outcome of a c
Introductory Applied Statistics
STP 420
Chapter 1
Looking at Data  Distributions
Basic Concepts of Statistics
What is statistics?
Statistics is the science of collecting, describing, and
interpreting data.
Descriptive
statistics
Inferential
Two Branches
> o L U T I (W
STP 420 QUIZ 1 Sept 8, 2016
SHOW ALL YOUR WORK! GOOD LUCK! NAME:
1 7. ) 4 S
1. (10 pts.) Consider the following data set (not given in ascending order):100,230, 145, 125, 150,
150135' 00; 15 #5150 :10 7253 230
a) Find the median M and the
Chapter 2
Looking at Data Relationships
In a simple case study,
amount of sales of a product
is linearly related to the
amount of money spent
advertising the product
Hubbles Law: Velocity at
which a galaxy is moving
away from us is
proportional to it dist
STP 420
EXAM 1
SHOW ALL YOUR WORK! GOOD LUCK!
Problem #
Max. points
1
20
2
20
3
10
4
10
5
20
6
20
Total
100
February 25, 2016
NAME:
Score
Some useful things:
If X is normal random variable with mean and standard deviation , then Z =
normal random variabl
SC) LU T10 N
STP 420 EXAM 1 February 25, 2016
SHOW ALL YOUR WORK! GOOD LUCK! NAME:
Some useful things:
Xu
0'
is standard
o If X is normal random variable with mean ,u and standard deviation 0, then Z =
normal random variable.
i ZLW  Wm 13) _
o In lin
WebAssign
HW3 (Homework)
Current Score : / 100
Caleb Tsosie
STP 420 Fall 2016, Sections 72240 & 72241, Fall 2016
Instructor: Marko Samara
Due : Sunday, September 25 2016 11:59 PM MST
The due date for this assignment is past. Your work can be viewed below,
Caleb Tsosie
STP 420 Fall 2016, Sections 72240 & 72241, Fall 2016
Instructor: Marko Samara
WebAssign
HW1 (Homework)
Current Score : 100 / 100
Due : Sunday, September 4 2016 11:59 PM MST
The due date for this assignment is past. Your work can be viewed bel
1. 7.14/7.14 points  Previous AnswersMIntroStat8 2.E.034.
A study of reading ability in schoolchildren chose 60 fifthgrade children at random from a school. The main purpose of this study was to ask
whether schoolchildren can estimate their own reading
i _, M, '
LA wig/i T L. N Sept 22, 2016
SHOW ALL YOUR WORK! GOOD LUCK! NAME:
(is, C
STP 420 \D ,x"
1. A student wonders if tall women tend to date taller men. She measures 6 women and their dates.
The data are listed below:
Mmemmmmmm
mm
iwwmmmm
(a) (5 p
STP 421  Problem Set 3 Solutions (Fall 2016)
1.) Suppose that X is a discrete random variable that takes values in the set cfw_2, 1, 1, 2 with
the following probabilities: P(X = 2) = P(X = 2) = 2/5 and P(X = 1) = P(X = 1) = 1/10.
Calculate the following
Question 1 5 out of5 points
Monthly,r cell phone bill is assumed to follow a normal distribution with a. mean of $4? and standard
deviation $8. What is the probability that a randornlj,J selected phone bill will be more than $67?
Selected Answer: 9 0_ 0.0
Forecasting
Moving averages  4 period moving average
Enter
Enter the
the past
past demands
demands in
in the
the data
data area
area
Num pds
Data
Period
Period 1
Period 2
Period 3
Period 4
Period 5
Period 6
Period 7
Period 8
Period 9
Period 10
Period 11
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.2723222944
R Square
0.074159432
Adjusted R Square
0.0360596832
Standard Error
4.4291269485
Observations
48
ANOVA
df
Regression
Residual
Total
Intercept
SS
MS
F
Significance F
5 65.9957145619 13.199142912
Module 7 DQ 1
To be considered substantive, a participation post (initial or ongoing) should average 150250
words in length.
Suppose you are interested in the behaviors of physicians that have high ratings of patient
satisfaction. The research goal is to
Module 6 DQ 1
To be considered substantive, a participation post (initial or ongoing) should average 150250
words in length.
Suppose you are interested in how children with severe autism experienced the receipt of special
education assistance in public s
Module 7 DQ 2
To be considered substantive, a participation post (initial or ongoing) should average 150250
words in length.
Suppose you are interested in the behaviors of physicians that have high ratings of patient
satisfaction. The research goal is to
Courtney Doerfler
Group Problems  Chapters 2 & 3
Using data from Problem 3.187 pg. 139, do the following.
1. Using Statcrunch, construct the histogram. Does the histogram appear
to represent a symmetrical population distribution?
a. No, it is right skewe
Types of Statistics:
*sample is part of a population observed or tested; population is group of individuals under study
Sampling Procedures
Simple Random Sampling (SRS): Most commonly used. Use of part of the population (a sample) to
examine the entire p
false
Question 1
1 out of 1 points
Based on mean, SD, and histogram the data's distribution is
_. (click on link)
Quiz Module5_histogram.doc
Selected
Answer:
c.
positively
skewed
Answers:
a.
skewed
b.
negatively
skewed
c.
positively
skewed
d.
normal
Quest