Keys to Homework 4
Due 9/2
5.8 c/p/m Let A = attended a sports event during the year. P(A) = 0.35 and the odds in favor of A
occurring are: P(A) : 1 - P(A) => 0.35 : 0.65, or approximately 1: 2.
5.9 c/p/m
If the odds in favor of an event happening are A:B
Key to online review Chapter 3
Question
A sample of 13 monthly sales figures (in thousands of dollars) are: 10, 6, 5, 10, 9, 7, 10, 9, 6,
8, 9, 6, and 6.
Calculate the mean absolute deviation. Show three decimal places.
Contains
1.633
Question
A sample of
Chapter 2 Review Quiz Key
Question
Answer
True or False
The appropriate methods for representing the data do not depend on whether the
variable of interest is quantitative or qualitative.
True
False
Question
Answer
True or False
Contingency tables are use
1. Question
A summary measure that is computed from a sample to describe a characteristic of
the population is called:
Answer
a parameter
a statistic
a population
inferential statistics
2. Question
Answer
A summary measure that is computed using the entir
AC210 Spring 2016
Quiz 1
Version A
20
Name _
CWID _
Score _ / 80
_ /
Total
_/ 100
Multiple Choice: Identify the letter of the choice that best completes the statement or answers the question. Mark your
answer in the blanks provided at the top. 10 points e
EVOLUTION
L A B O R AT O R Y 1 0
EVOLUTION
Purpose
introduce the fundamental principles of natural selection and evolution
Outcomes
describe evolution and natural selection
utilize basic terminology used by biologists to discuss evolution
identify the
AC210 Spring 2016 Exam 1 Study Guide
The main concepts tested on the first exam are set forth below. Recommended problems are also provided from the end
of each chapter in the textbook. *Note that exercises and problems have been put into groups. Those pr
Formula Sheet
ST 260: Statistical Data Analysis
Exam 2
Expected Value
Mean:
= E(X)
=
x p(x)
Variance:
2 = E[(X )2 ]
=
(x )2 p(x)
Cumulative Probabilities
Cumulative distribution function (cdf):
F (k) = P (X k)
Complement of cdf:
1 F (k) = P (X > k)
Disc
Study Guide
1
ST 260: Statistical Data Analysis
Exam 2
Problem Solving ( 70%)
Lesson 7: Discrete Distributions
Compute the expected value, mean, variance, and standard deviation for discrete probability distributions.
Compute probabilities and cumulati
Formula Sheet
ST 260: Statistical Data Analysis
Exam 1
Frequency Distributions and Histograms
Sturges Rule:
Class Interval:
k = 1 + 3.322 log10 n
Range
k
Sample Measures
Mean:
1
n
x=
Mean Absolute Deviation:
xi
i=1
MAD =
n
1
n
|xi x|
i=1
n
1
n1
s2 =
Varia
Study Guide
1
ST 260: Statistical Data Analysis
Exam 3
Problem Solving ( 70%)
Lesson 11: Sampling Distributions
1. Apply the Central Limit Theorem to compute probabilities for the sample mean X
(a) When the population size is innite; and
(b) When the pop
Study Guide
1
ST 260: Statistical Data Analysis
Exam 1
Problem Solving ( 70%)
Lesson 2: Frequency Distributions and Histograms
Apply Sturges rule and apply steps 1 - 6 to create a (i) frequency distribution, (ii) relative frequency distribution, (iii) c
Quiz 6 Study Guide
1
ST 260
Statistical Data Analysis
Learning Objectives
Objective(s)
1
2
3
1
2
3
Lesson
12
13
Description
Talk the talk - know key terms.
Construct condence intervals for when is known.
Construct condence intervals for .
Compute probabil
Quiz 5 Study Guide
ST 260
Statistical Data Analysis
Learning Objectives
Objective(s)
1
2
3
4
5
Lesson
11
Description
Explain and apply the Central Limit Theorem.
Compute probabilities of sample mean from large/innite population.
Compute probabilities of s
Formula Sheet
ST 260: Statistical Data Analysis
Exam 3
Z Transformations for Sampling Distributions
For X:
Z=
X X
,
X
where:
X = and X =
n
For p:
Z=
p p
,
p
where:
p = and p =
For X with Finite Population:
Z=
X X
,
X
where:
X = and X =
n
For p with Fini
Quiz 3 Study Guide
ST 260
Statistical Data Analysis
Learning Objectives
Objective
2
3
4
4(a)
4(b)
1
1(a)
1(b)
1(c)
2
3
Lesson
5
6
Description
Given odds x to y, compute the relevant probabilities.
Construct Venn diagrams to represent events and probabilit
BUS - 260
Practice Exam #1
Spring 2014
Chapters 1 - 3
Name- ngglef is _.
Multiple Choice (2 points each)
Identify the choice that best completes the statement or answers the question.
/1. Which of the following variables is quantitatiVe?
a. Gender Oval H
BUS - 260
Practice Exam #4
Spring 2014
Chapters 12 & 13
Multiple Choice (2 points each)
Identi; the choice that best completes the statement or answers the question
1. Exhibit 12-15. A real estate analyst believes that the three main factors that inuenc
BUS 260
Practice Exam 3
Fall 2013
Chapters 7 9
Name A! l!§=(-
Multiple Choice (2 points each)
Identiz the choice that best completes the statement or men the question.
1. What is the minimum sample size required to estimate a population mean with 95% con
BUS 260
Practice Exam 2
Fall 2013
Chapters 4 6
Multiple Choice (2 points each)
Identify the choice that best completes the statement or answers the question.
I. Exhibit 5-].
Consider the following discrete probability distribution.
1" _ _ .219.
0.35
0
Statistics Test Two Study Guide
Chapter Five: Probability
The Classical Approach (a priori)
the classical approach describes a probability in terms of the proportion of times that an
event can be theoretically expected to occur. I.e. rolling a dice, cards
Alyssa Lehmann
11405655
ST260 Homework #4 Due: Monday, Nov. 11th
1. Problem 9.82 from textbook (Requires data file XR09082)
Construct and interpret the 90% and 95% confidence intervals for the mean.
The 90% Confidence Interval is approximately (27.8, 31.9
ST 260
Final Exam (Test 3) Sample Questions
From a data-set examined in class, the response (Y) was the Average Reading Scores of 8th Grade students (by
state) with possible predictors being X1 = average number of years of parents education and X2 = per-p
Caitlin Totty
Test 3 Take home Portion
1. In my project I gathered data on the square footage of homes and the listing prices of
these homes. There is a direct correlation between the two because the bigger the home
is the more expensive the home is going
Module 1 assignment:
Pages 8-9
1) Define the following terms:
a. Population The collection of all items or individuals under consideration in a
statistical sample.
b. Sample The part of the population from which information is obtained
2) What are the two
Module-5
Page 150
12
Educated CEOs
A
Probability of having B.S./B.A. = 164/500 = 32.8%
B
Probability of having either M.B.A. or J.D. = 241/500 = 48.2%
C
Probability of having at least some college = 486/500 = 97.2%
15
Housing Units
A
Probability of 4 room
Module 4
Page 644
34
Scatterplot
A
variables
Identify one of the uses of a scatterplot to visualize the relationship between 2
B
What property should it have to obtain a regression line for the data must have
a horizontal axis for observations of one vari