Mohamad Elsayed
STAT 113
Part A
In this course we will be researching an objective in that we will try to answer. This
research objective that we are trying to answer with our analysis would be what factors and
variables make up a successful student. This
Project Part D
Olivia Lam
Professor Liang
In Part D of this project I will be discussing six important pairs of variables that will be
useful for the University of West Erlham County. The six important pairs that I will be using to
compare to each other i
Multiple Choice Questions (Chap 8)
61. An internal control system consists of all of the following policies and procedures except
ones designed to:
C. Guarantee a return to investors.
62. Managers place a high priority on internal control systems because
Hunter College of CUNY Fall 2014
Elementary Probability and Statistics - STAT 113.01 Code 12325 (3 Credits)
M, Th (HN 305) 8:10 am 9:25 am
Instructor: Alejandro Falchettore
Email: afalche@hunter.cuny.edu
Office Hours:
Monday 7:00pm to 8:00pm at the Dolcia
AS2-56-41: Canadian Income According to Statistics Canada, in 2004 the median household income in Canada was $58,100 and the mean was $76,100.What would you predict about the shape of the distribution? Why? The shape of the distribution would be skewed to
Statistics113 Fall2010
Normal Density (Part 1)
1) The distribution of heights of American women aged 18 to 24 is approximately normally distributed with mean 65.5 inches and standard deviation 2.5 inches. Using the 68-9599.7 Rule answer the following ques
Randomness and Intuitive Probability
Stat113 Click to edit Master subtitle style
2/16/11
Basic Terminology
Outcome: Possible result of an experiment or phenomenon Sample Space: Set of all possible (relevant) outcomes Event: A set of outcomes (any subset o
Conditional Probability
Stat113
Review
For a sample space of equally likely outcomes, given two events A and B P(A) =
#outcomes in A / #total outcomes
P(B)
= #outcomes in B / #total outcomes
P(A and B) =
#outcomes in both A and B / #total outcomes
Ch9: Regression
Stat113
Correlation
Weve seen that correlation measures the linear relationship between two variables
In what direction? (pos. or neg.) How strong? (close to 1, or to -1)
When two variables are strongly correlated, if we know an individ
Class 4
Stat113 Click to edit Master subtitle style
2/16/11
Review
Density Curve: A mathematical model of the distribution of a variable
Approximates a histogram
Given actual data for a variable X, one can:
View a histogram of X Answer questions about the
Stat 113
Distributions Master subtitle style Click to edit and their Summary Statistics
2/16/11
Distribution
Activ Stats: The distribution of a
variable gives the values the variable can take on, and tells how frequently it takes on each of these values
I
STAT 113
Class 2
Data and Measurement The Distribution of a Variable
OBJECTIVE A: DATA
What is data?
Values, Labels, or Names that record/contain information about individuals in an orderly fashion, together with a context
Example:
Each row represents a
Class 7
Stat 113
Box plots
A graphical representation of a variable Illustrates center, spread, and skewness Takes a 5 number summary perspective good for broad comparisons between classes of individuals
For example, one might compare heights of individ