STAT 241/251 Assignment 3
You must use the pre-formatted cover sheet when you hand in the assignment.
Date Due: Thursday 28 Jun by 7 pm in STAT 241/251 dropbox at LSK (dropbox is on the 3rd
oor, close to the Department of Statistics main oce.)
Total Marks
Use the following to answer questions 12:
You wish to compare the prices of apartments in two neighboring towns. You take a simple
random sample of 12 apartments in town A and calculate the average price of these apartments.
You repeat this for 15 apartme
STAT 241/251 Assignment 2
You must use the pre-formatted cover sheet when you hand in the assignment.
Date Due: Thursday 07 Jun by 7 pm in STAT 241/251 dropbox at LSK (dropbox is on the 3rd
oor, close to the Department of Statistics main oce.)
Total Marks
STAT 241/251 Assignment 2
You must use the pre-formatted cover sheet when you hand in the assignment.
Date Due: Thursday 07 Jun by 7 pm in STAT 241/251 dropbox at LSK (dropbox is on the 3rd
oor, close to the Department of Statistics main oce.)
Total Marks
STAT 241/251 - Chapter 10: Analysis of Variance
(ANOVA)
In the previous chapter, we learned how to do a 2-sample t-test for the equality of means,
for two independent groups. (ie) Ho : 1 = 2 .
Analysis of variance (ANOVA) is a method for testing the equal
STAT 251 - Chapter 4/6: Random Variables and
Probability Distributions
We use random variables (RV) to represent the numerical features of a random experiment.
In chapter 3, we dened a random experiment as one where the possible outcomes are known
before
1 A factory manufactures spherical ball bearings of various sizes. The radius, R cm, of a
randomly chosen ball bearing has probability density function given by
3 2
fig): gr l.§r33
0 otherwise.
2. The relationship between
The surface area of a randomly
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Chapters 1 and 2: Summary and Display of Univariate Data
Lets start our introduction to data with an example. Suppose that people are interviewed at
UBC and asked a few questions about their study habits. The results are recorded in the
following data tab
Chapter 3: Probability
We are going to shift gears now and spend some time building the tools we will be using for
statistical inference later in the course. For now we will assume that true probabilities are
known, later we will learn how to estimate pro
STAT 241/251 - Chapter 8: Statistical Modeling and
Inference
In this chapter we talk about taking a sample from a population, and using this sample
to make inferences about the population.
Note: Chapters 3-7 of this course discussed the probability of obs
STAT 241/251 - Chapter 7: Central Limit Theorem
In this chapter we will introduce the most important theorem in statistics; the central limit
theorem.
What have we seen so far?
First, we saw (in Chapter 4) that for an i.i.d random sample X1 , X2 , ., Xn ,
Ch. 5 The Normal Distribution
1 Denition and Properties
Normal Distribution: If a continuous random variable X follows a normal distribution with mean ,u
and standard deviation 0, we write
X~Nm)
The normal distribution has a continuous density summarized
Statistics 241/251: Lab 6 Handout
Lab Section: _
Group number: _
# First name
Last name
Student #
1
2
3
4
Students should write the name they are registered with.