Hypothesis Testing
HypothesisTesting
Testing hypothesis about
population means
Null Hypothesis
Non - parametric test: these are used
mainly when population distributrions are
not normal
Test statistic Formula
Normal: z
Normal: z
(x bar - )/ /n
(x bar - )/
Monday, 24 October 2016
Quantitative Politics
Vedika Darooka
Homework III
Question 1
a) Sufficient
b) Sufficient
c) Sufficient
d) None Apply
e) None Apply
f)
Necessary
g) Necessary and Sufficient
h) Sufficient
2 a) The experimenters randomly assign subjec
Descriptive statistics
Descriptive Statistics we use, depends on the variable level
Measure of central tendency must match variable precision
Statistics as summaries
Big data sets are unwieldy and so it is imperative to summarise information to make infer
data and theories
theory is a conjecture about causes of some phenomena. Makes science, separates us from
journalism.
Research is about using data to test theories
Theoretical analysis : positive is how the world is vs. normative how it ought to be
causal
measurement and concepts
concept
Ideas that represent phenomena in the real world
conceptual definition
A conceptual definition clarifies our concept. It must communicate:
nature of characteristics and its variation among subjects ( e.g. more or less soci
Monday, 3 October 2016
International Politics
Three Referendums:
Brexit Referendum
National Health Service and saving: false claims
Leader of the labour party: Jeremy- against Brexit
Hungarian Migrant
Viktor Orban: Gerrymandering : organising the district
Darooka 1
Quantitative Reasoning For Politics
Vedika Darooka
Homework 2
3 October 2016
Mai Nguyen
POL-UA-800-007
1a)
AIRLINE A
AIRLINE B
NEWYORK
0.400
0.367
LOS ANGELES
0.150
0.100
ATLANTA
0.200
0.175
CHICAGO
0.300
0.280
TOTAL
Number of Delayed Flights/ T
Homework #1 (due on 2/7/2017 at the beginning of class)
[28 POINTS IN TOTAL]
NOTE: Please save a copy or take a photo of your finished homework for your own record.
PART A (FB SEC FILING): The following questions require you to find information contained
Homework #2 (due on 2/16/2017 at the beginning of class)
[25 POINTS IN TOTAL]
NOTE: Please save a copy or take a photo of your finished homework for your own record.
PART A (AMAZON): After completing this homework, you should have a much deeper
understand
Voices and Selves: Beyond the Modern-Postmodern Divide
Author(s): Mitchell Aboulafia
Source: The Pluralist, Vol. 8, No. 1 (Spring 2013), pp. 1-12
Published by: University of Illinois Press on behalf of the Society for the Advancement
of American Philosoph
CAUSALITY
establish causal relationships
evaluating causal claims
Association
Statistical Relationship between variable X and variable Y
unobserved variables sometimes hide true association
correlation is a measure of association
Objective nature of Ass
Wednesday, 21 September 2016
International Politics
HOW DID HITLER COME TO POWER
Germany lost WWI
Unclear how people treat the loser of the war
Germany was subjected to extremely harsh terms as part of the post war settlements- Treat of V. (
find out)
Hig
NMIMS University
FTMBA
Trimester I
Hand out 3
Distributions, Binomial and Poisson
Q. 1 Following data gives the prospects about EPS of a company for the year 2006-07.
Economic condition
Average
Good
Very Good
EPS
1.2
1.5
2.0
Probability
0.2
0.5
0.3
What i
Assignment 1
Contents
A. Assignment
B. Data description
The German Credit data has data on 1000 past credit applicants, described by 30
variables. Each applicant is rated as Good or Bad credit (encoded as 1 and 0
respectively in the Response variable). We
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
B
C
D
E
F
G
Chi-Square Test for Goodness-of-Fit
Frequency data
Actual
Expected
k
df
Tan
Brown Maroon Black
12
40
8
20
20
20
20
20
4
3
Test Statistic
c2
30.4
p-value 0.0000
H
I
Watchband color
J
K
L
A
1
2
3
4
5
6
7
ACCOUNTING/FINANCE
SAMPLE TEXT AND EXAM QUESTION
Cost-Volume-Profit Analysis
CVP analysis is used to analyze the factors that affect a firms profitability. It examines the relationship between
sales, expenses, and net income.
An income statement based on
NMIMS University
FTMBA :
Trimester I
Hand out No. 2
Title: Bayes Theorem and applications
1. Assume that a factory has 2 machines. Past record show that machine 1 produces 30% of the items
of output and machine 2 produces 70% of the items of output. 5% of
NMIMS University
FTMBA
Hand out No. 1
Trimester I - SABD
1. A water purifier salesperson finds that the probability of selling a unit to a prospective buyer on the first
contact is 0.30 but improves to 0.60 on the second contact. The salesperson will not
Narsee Monjee Institute of Management Studies (Deemed University)
Statistical Methods- Assignment-8(chi-square & F tests)
1. Each person in a random sample of 50 was asked to state his/her sex and preferred colour. The resulting frequencies
are shown belo
Narsee Monjee Institute of Management Studies (Deemed University)
Statistical Methods- Assignment-2(Testing Hypothesis One Sample)
1. A random sample of n observation is selected from a population with unknown mean and variance 2. For each of the
followin
NMIMS UNIVERSITY
FTMBA
SABD
Trimester I
Hand out 4
Normal distribution.
1. General Hospital's patient account division has compiled data on the age of accounts receivables.
The data collected indicate that the age of the accounts follows a normal distribu
NMIMS University
Handout 1 Sampling, Sampling Distributions and Estimation
1.
The Greensboro Coliseum is considering expanding its seating capacity and needs to knows both the average
number of people who attend events there and the variability in this nu
Statistical Analysis of
Pelican Store case
BY
HIMANSHU(H026)
SUPRIYA(H027)
ABHINAV(H028)
CHANCHAL(H029)
Case Outline
Pelican store is a division of National clothing
Targeting customers of other divisions of National clothing
Discount coupons sent to the