STAT 202, Fall 2014
Assignment 1
Due: Wed, Oct 1st 2014, by 5pm
First Name:
Last Name:
Student Number:
Section Number:
001
002
Acknowledgments:
Instructions:
Fill in the top part of this title page and use it as a cover page for your assignment;
Clea
Tutorial 3
29th/ 31st Jan 2014
Question 1:
A survey by Gallup asked a random
sample of American adults about their
soda consumptions. Let X represent the
number of glasses of soda consumed on a
typical day. Gallup found the following
probability model for
Lecture 10
29th Sept 2014
Potential Questions of Interest?
Recall the rabbit experiment
What if we want to know the probability
that we select either a brown OR a
mottled rabbit?
We want to know the probability that in 2
tries we select a brown AND a mott
2013-02-02
Tutorial 3
30th Jan 2013
Ques%on 1:
Suppose that 37% of the students in an
introductory stats course are athletes. When
asked to pick which award they would prefer
to win, 5% of the athletes chose a
Lecture 3
th
Jan 11 2012
Order Statistics (Section 2.4)
Recall we represented the Median by
Q2 and said that it is called the Second
Quartile.
The Median actually represents one of
3 quartiles that we will talk about.
A quartile derives its name from
quar
Lecture 12
1st Feb 2013
Wording
If we say that our answer is at most 4, then
our answer can
A)Include 4
B)Not include 4
Notation:
If we say that our answer is at least 4,
then our answer can
A)Include 4
B)Not include 4
Notation:
If we say that our answ
Tutorial 3
30th Jan 2013
Question 1:
Suppose that 37% of the students in an
introductory stats course are athletes.
When asked to pick which award they
would prefer to win, 5% of the athletes
chose an Academy Award, 22% chose a
Noble prize, and 73% want
Tut 2
23rd Jan 2013
Question 1:
For events A and B, we have P(A)=0.4,
P(B)=0.3, and = 0.1. Find:
a) ()
b) ( )
c) Are events A and B disjoint?
d) Are events A and B independent?
Question 2: If Pr(E )=3/4 and Pr(Fc )=5/6 and it is
known that E and F are i
Lecture 7
21st Jan 2013
Classical
The probability of some event/ outcome
is:
Number of ways the event can occur
Number of outcomes in S
Assumes that all points in S are
equally likely
Probability
Let E be an event containing |E| simple
outcomes.
Let S be
Lecture 6
18th Jan 2013
Stem and Leaf Plots
Recall that when we draw a boxplot or a
histogram the individual data values are lost.
The Stem and Leaf plot attempts to fix this
issue.
The plot consists of two mains
parts/components; the Stem and the Leaf
E
Welcome to W13
Lecture Times/Venue: 10:30 to 11:20
MWF, M3 1006
Tutorial: 4:30 to 5:20 W, M3 1006
My Office Hours: 12:00-1:00 M
2:00-3:00 W
Office hours will be held in M3 3126
TA office hours will be announced later
Text Book: Statistics for the Life Sc
Lecture 7
22nd Sept 2014
Examining Relationships
Between Variables
Problem: Do people who attend a diabetes
control class manage their blood glucose levels
better than those that received individual
instruction?
What are a few things that we observe when
Lecture 5
17th Sept 2014
Example 2.6.7:
Girls Height and Weight: The heights (in cm) and
weights (in kg) of 13 girls were measured at age
two.
At age two the average height was 86.6 cm and
the SD was 2.9cm.
At age two the average weight was 12.6kg and
the
Examining Relationships Between Variables
In the blood glucose data we were looking to see
whether our response variable: fasting blood
glucose level, differs across the two levels of the
explanatory variable (in-class vs. individual
instruction) i.e we
Mutually Exclusive
Two events are mutually exclusive
(ME) if they have no outcomes in
common or can never occur
together.
Is the event A person wears glasses
mutually exclusive from the event A
person has brown eyes?
A. Yes
B. No
Examples of ME events:
Tetrapods II - Endotherms
Aves and Mammalia
Ectothermy and Endothermy
Ectotherm an animal that derives its body heat primarily from the
environment. Body temperature can vary widely.
body temperature can be partially regulated behaviourally, by basking
a
Lecture 26
th
11 Nov 2016
Continuous Random Variables
Let X be a continuous random variable then:
Probability Density function (PDF)
= =
Properties:
1.
= 1
2. Mathematically this exists, however for a
continuous r.v = = = .
Why?
Recall for Conti
Lecture 19
th
26 Oct 2016
Lecture Outline:
Recall
Random Variables, Probability Function
Find the Prcfw_Diameter<8
A) [0;20)
B) [20;40)
C) [40;60)
D) [60;80)
E) [80;100)
Determining Mean and Median
Median: value that the divides the area under the
cu
Lecture 17
st
21 Oct 2016
Lecture Outline:
Recall
With vs. Without Replacement
Risk and Odds
Question:
Among those people who are infected with a certain
virus, 32% have strain A, 59% have strain B, and the
remaining 9% have strain C. Furthermore, 2
STAT 202
Chapter (1)
Chapter 1
Picturing Distributions with Graphs
Chapter objectives
Know the definition of Statistics.
Understand the types of variables.
Ways to chart categorical data: bar graphs and pie charts.
Ways to chart quantitative data: his
Chapter 2 Describing Distributions with
Numbers
Chapter objectives
Measure of center: mean and median.
Measure of spread: quartiles and standard deviation.
The five-number summary and boxplots.
IQR and outliers.
Identifying outliers.
Data Analysis an
Chapter 1 Picturing Distributions with
Graphs
Individuals and Variables
Statics is the science of data
o Requires analysis, organization and summarization of data
o In addition, a conclusion must be drawn
Samples must be taken that are representative of t