Quartiles
Step 1: Organize the data from lowest to largest value
Step 2: Divide the data into four equal parts (ie. 25% of data fall into each part)
Step 3: Read off the last value in each part
Q1
Median
Q2
Q3
25% of data
50% of data
75% of data
100% of d
What is Statistics?
Statistics is the science of
collecting,
organizing,
analyzing,
interpreting data, and
presenting
to assist in making more effective
decisions.
Types of Statistics
Descriptive Statistics
Inferential Statistics
Descriptive Statistics de
Frequency Distribution
- a grouping of data into mutually exclusive categories
showing the number of observations in each class.
Step One: Decide on the number of classes using
the formula
2k > n
(2 to the k rule)
where k=number of classes
n=number of obs
Probability
Descriptive Statistics deals with what happened in the past.
Inferential Statistics deals with what may happen in the future.
In studying about future events, we begin with the concept of probability.
Probability: A measure of the likelihood a
Mid-Term Review
1. Determine whether the following group of people is a sample or population:
a. The participants in a study of a new cholesterol drug.
b. The drivers who received a speeding ticket in Los Angeles county last year.
2. Which level of measur
Formulas
Relative frequency of a class =
x
x
x
i
n
N
E x x f x
=
( ) =
2
=
i
0
Frequency of the class Number of data items in the class
=
n
Total number of data items
2
x
2
i
s
N
2
x x
n 1
Var x x f x
z
2
=
( ) =
2
0
=
2
i
x
= +
(1)
2
Linear Regression
Regression Statistics
R
R-square
Adjusted R-square
S
N
0.97913
0.95869
0.94836
31.11601
6
Production Volume (units) = - 133.50546 + 0.12614 * To
ANOVA
d.f.
SS
89,877.17616
3,872.82384
93,750
MS
89,877.17616
968.20596
F
92.82857
Coefficie
Homework #1
Question #4, page 36
#4.
(a) The data is categorical.
(b) Frequency and percent frequency distributions:
Preferred Shows
Frequency
Law & Order
10
CSI
18
Without a Trace
9
Desperate Housewives
13
Total
Percent Frequency
10
100
50
18
100
50
9
10
Age
18
25.8
33.7
41.5
49.3
57.2
More
Frequency
1
6
9
7
3
5
5
Employee Age at Otto's Auto Parts
Frequency
10
9
8
7
6
5
4
3
2
1
0
9
7
6
5
5
57.2
More
3
1
18
25.8
33.7
41.5
Age
Frequency
49.3
s Auto Parts
7
1.5
5
5
57.2
More
3
49.3
Improvement
Mean
Standard
Silva Harounian - 14
I. Introduction
Statistics and stochastic models play a major role in determining economical summaries
and help in determining the most beneficial decisions that can be made. Statistics and
stochastic models can collect and analyze da
Som 306
Where to inspect in the process
Raw materials and purchased parts
Finished products
Before a costly operation
Before an irreversible process
Before a covering process
Inspection
How much/ how often
Where/when
Centralized vs. on-site
Input
Chapter 14
Material
Requirements
Planning
MRP
MRP translates Master Schedule requirements for end-items into time-phased
requirements for subassemblies, components, and raw materials.
An sample entry in Master Schedule for a Product (Eg. You need Q1 chair
Chapter 12
Inventory Management
Inventory
- a stock or store of goods to meet customer demand
Independent Demand
Dependent Demand
A
C(2)
B(4)
D(2)
E(1)
D(3)
F(2)
Independent demand is uncertain.
Dependent demand is certain.
Inventory Management
Basic deci
My research paper aims to determine the benefits of bilingual up-bringing and how bilingualism
helps to develop learning skills, especially in learning languages. I have conducted a survey, which
was held with the help of questionnaires. My participants w
1
Table of content
Introduction3
Literature Review.5
Data and Methods.9
Results.11
Discussion.18
Conclusion.18
References.20
Appendix: Questionnaire Sample.21-22
2
Attitudes to language policy in Kazakhstan: KIMEP students and their parents
Introduction
T
Benefitsofbilingualupbringing
Nowadays, theres no limit for students learning process and learning techniques. You can
learn for free, using internet sources, go to language clubs or find convenient courses next to your
house. You can by yourself choose w
Bilingual up-bringing
What makes peoplepeople, homo sapiens ? What differs people from another creatures, like
animals or plants? What makes human dominant, king of the Earth? Off course, answer for all
these questions is brain! thefreedictionary.com give
Benefits of being bilingual
Discussion
Merriam-Webster, an American company that publishes reference books, especially
dictionaries that are descendants of Noah Webster's An American Dictionary of the English
Language, gives to bilingualism definition as
My research question: Do children raised in bilingual families have better learning skills,
especially in learning languages?
What information do I need to have to
answer my research question?
What is already known about the issue I
am investigating? (nam
Benefits of being bilingual
Table of content:
1.
Introduction
3
2.
Literature
Review.4-9
3.
Methodology
.9
4.
Results
10-17
5.
Discussion
.17-20
6.
Conclusion
20
7.
References
22
8.
Appendix
.23
1
Benefits of being bilingual
Introduction
Can you imagine w
PART 1:
FINANCIAL PLANNING
Chapter 1
Financial Planning:
The Ties That Bind
Learning Objectives
Explain why personal financial planning is so
important.
Describe the five basic steps of personal financial
planning.
Set your financial goals.
List fifteen p
PART 1:
FINANCIAL PLANNING
Chapter 4
Tax Planning and
Strategies
Learning Objectives
Explain how the present U.S. income tax system
came into being.
Identify and understand the major tax features that
affect all taxpayers.
Describe the other non-income-ba
Exponential Smoothing
Ft+1 = Ft + (At - Ft)
=
Period 1
Period 2
Period 3
Period 4
Period 5
Period 6
Period 7
Period 8
Period 9
Period 10
0.4
Actual
550
770
920
Age of Data in MA is = to:
(1+n)/2
Moving Avg:
Age of Data =
Forecast
550
550
638
750.8
Range:
Memo
Scharadin Hotel
To: Larraine Scharadin
From: Scott Schultz
CC: Other Staff
Date: March 28, 2016
Re: Quality Recommendations
It seems as though we are having a quality issue at our Texas location. The issue is that guests are being
charged for things
SOM 306 Operations Management
A. Dechter
Chapter 14 - Solutions
Problem 1:
Q
2
weeks
3 R
weeks (2)
4 S
weeks (1)
X
(2)
2 T
weeks (3)
Y
(1)
3 weeks
V
(1)
2 weeks
Z
(3)
3 weeks
2 weeks
Note: numbers inside parentheses represent usage per parent while number