Assignment Unit 2
1. Sometimes it is difficult to understand data if you do not know what the numbers represent.
Provide short definitions of two words: sepal, and petal (be sure to cite your sources even if you
paraphrase):
Answer
Sepal: one of the speci
All of my answers are denoted by A) and are in black.
Cumulative Frequency Table for Petal Length
Use the following table to answer tasks 2-4.
Value:
Cumulative Relative
Frequency:
1
2
3
4
5
6
7
.16
.33
.35
.58
.81
.97
1.00
Tasks
1. Sometimes it is diffic
Assignment Unit 6
1. The first task is to review some information that might be useful later:
a. Write a brief definition of the word "quartile" as we have used it in previous
weeks.
Quartile is the division of a set of data values into four equal groups,
What would the within groups degrees of freedom be for the test we
would perform on this question: Is how many times you eat out
during the semester related to where you live (on campus, off
campus, at home with parents) if we asked 10 students to resp
Question on Squarecap.com
What would be your adjusted alpha for post-hoc comparisons
for a study in which you have 6 groups?
A) 0.0083
B) 0.0033
C) 0.05
D) 0.0063
E) 0.17
Chi-square tests
There are two type of chi-square tests:
The test for goodness of f
Independent or not?
Do you think there is a relationship between gender and how many
pairs of shoes you own?
More 10 or
Talk with someone near you and try
than 10 less
Total
to determine if you think these are
independent or not. Write a sentence
50
Answer on Squarecap.com
If I rolled a 6-sided dice 500 times, what would the expected
count be for rolling a 4? Round to 2 decimal places.
Announcements
Dont forget to study/practice for lab quiz on Friday
There is a test on 10/31. Start studying now.
Ti
SDS 302 Estimating the Mean
Confidence levels
How can we estimate the population mean from a sample?
What is a confidence interval?
We can compute a _ for which believe the _
_falls between
The interval is called _
How confident we want to be that we capt
Quartiles
Quartiles are the values that divide a list of numbers into quarters.
First put the list of numbers in order
Then cut the list into four equal parts
The Quartiles are at the "cuts"
Like this:
Example: 5, 8, 4, 4, 6, 3, 8
Put them in order: 3, 4,
The Product and Quotient Rules
The Product Rule
Theorem:
Let f and g be differentiable functions. Then
(f(x)g(x)' = f(x)g'(x) + f '(x)g(x)
Proof:
We have
d/dx (fg)
f(x+h) g(x+h) - f(x) g(x)
= lim
Add and subtract f(x + h)g(x)
h
f(x+h) g(x+h) - f(x+h) g(x)
Graphing
The Distance Formula
If two points are in the plane, we can find the distance between them by using the
Pythagorean theorem. For example, if the points are (1,4) and (5,2), then the the figure
below shows the right triangle that helps us find the
Higher Derivatives
The Second Derivative
The derivative of the derivative is called the second derivative.
There are two main ways of writing the second derivative. They are
d2y
f '(x)
and
dx2
The main benefit of the first notation is that it is easy to w
The First Derivative Test
The First Derivative Test (Motivation and Theorem)
If f is a function, then f has a relative maximum at x = c if for all points a near c, f(c) >
f(a), and f has a relative minimum at x = c if for all points a near c, f(c) < f(a).
Increasing and Decreasing Functions
Definition of Increasing and Decreasing
We all know that if something is increasing then it is going up and if it is decreasing it is
going down. Another way of saying that a graph is going up is that its slope is posit
Optimization
Steps for Solving Optimization Problems
1. Draw the picture and label variables.
2. Determine a constraint equation (if necessary) and a maximizing (minimizing)
equation.
3. Use the constraint equation to solve for one of the variables and su
Definition
Mathematics may be defined as the study of relationships among quantities, magnitudes and
properties, and also of the logical operations by which unknown quantities, magnitudes, and
properties may be deduced (Microsoft Encarta Encyclopedia) or
Business Economics Applications
Review of Revenue, Cost and Profit
We define the revenue R to be the total amount of money coming into the company, the
cost C the total amount of money coming out of the business, and the profit P is the
revenue minus the
Name:_
SAMPLE FINAL EXAM
Directions: Mark your final answer to each question on the Parscore form.
In an effort to improve customer service, Dell monitors the time customers wait on hold
when calling in for support. The following summary data represents t
Pronsticos, Series
de Tiempo y
Regresin
Captulo 3: Regresin Lineal
Simple
1
Temas
Modelo de Regresin Lineal Simple
Estimaciones puntuales de los mnimos
cuadrados
Estimaciones puntuales y predicciones puntuales
Suposiciones del modelo y el error estndar
*print study guide and practice test, MEMORIZE, skim tb chapters/readings/videos, do practice test, go
over all slides and notes; maybe make quizlet?
Topic 1:
Why do we have audits? (Why is there an auditing function?) To assess the validity of financial
San Francisco Bay Consulting Case
San Francisco Bay Consulting has many problems they need to address in order to
have a successful, profitable company. There is much strife between the CS Division
and the other work groups at the company due to the high
Class 2/22
Chapter 7
What is crime
o A wrong committed against society
o Who defines crime? the law, what we deem as bad; behavior deemed as unacceptable by
society
o Whos the plaintiff? the governmentrepresents society
o How are crimes related to torts?
LEB HW#2
1. I believe that ethical leaders have both individual as well as organizational
responsibilities to themselves and those that they lead, respectively. When one is delegated
the leader of a group, the group is entrusting much power and responsibi
Christina Connealy-cc55524
LEB HW #1
1. Yes, I believe that ethics demands more than the law does. The legal system is
not as discriminate and biased towards what is considered right and wrong as
the individual, human mind is. Ethics demands that we live
LEB HW #3
1. I think that many studies show that no single factor has a bigger impact on the ethicality
of a companys culture than the personal examples set by firm leaders because the
interaction and influence of people, especially from places of power,
Case: Siemens Electric Motor Works
The main issue in this case starts with the fact that during the 1980s,
labor rates reached such a low level in Eastern Europe that Electric Motor Works
could not compete with the low costs of other companies producing s