Statistics 103 Spring 2008 Practice Midterm 1
The midterm is on Monday Apr 28, 3:104pm. You can bring 1 page of handwritten notes. Please bring calculators, pens/pencils and bluebook(available at bookstore). Please write your name, student ID and se
STA 103 Fall 2016
Homework 5  Solutions
1. (a) The conditional distribution can be found below:
X Y=0
P (XY = 0)
0
2/3
1
1/3
P
And E[XY = 0] = X XP (XY = 0) = (0)(2/3) + 1(1/3) = 1/3
(b) The marginal distributions are:
X
P(X)
0
8/12
1
4/12
Y
P(Y)
0
3
Binomial Distribution
1. We know what the term distribution means in the context of a discrete random variable
2. We know how to find the mean the variance 2 and the standard deviation of a discrete random
variable X given its distribution.
3. Now let us
Biased and Unbiased Estimation
Tania Roy
May 25, 2017
Tania Roy
Biased and Unbiased Estimation
May 25, 2017
1 / 11
Population and SampleParameter and Statistic
Tania Roy
Biased and Unbiased Estimation
May 25, 2017
2 / 11
Is the statistic an Unbiased estim
Sample midterm 1
1
Important!
1. You are allowed to bring one formula sheet (A4/letter sized paper written on both the sides) and youll
be allowed to use calculator.
2. The test shall be 50 minutes long and you will not be provided with any extra time.
3
WORKSHOP 4
More Features of Microsoft Excel: Array Formulas, Charts, & Pivot
Tables
Excel is useful in summarizing large quantities of data in ways that convey the information in an
appealing and concise manner. By learning features of electronic spreadsh
WORKSHOP 7
Apache OpenOffice Base: Forms and Reports
In the previous workshop we learned about the most important internal parts of a database, tables
and queries. Those parts are rarely directly visible to the norm
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Statistics 103 Fall 2013
Homework 2
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Statistics 103 Winter 2008 Practice Midterm 1
The midterm is on Monday Jan 4, 3:104pm. Students whose last names start with AH should go to 6 Wellman Hall. Others should go to 100 Hunt Hall. You can bring 1 page of handwritten notes. Please bring c
STA 103 Practice Midterm II Solutions 1 (a)
^ ^ ^ ^ ^ ^ TRUE. Criterion is: choose estimator "1 over " 2 if mse( "1 ) < mse( " 2 ), otherwise choose " 2 over "1 . ^ For unbiased estimators, bias is equal to zero, so the criterion is equivalent to: c
Statistics 103 Winter 2008 Practice Midterm 2
Students whose last names start with AH should go to 6 Wellman Hall. You can bring 1 page of handwritten notes. Please bring calculators, pens/pencils and bluebook(available at bookstore). Please write y
Statistics 103: Final
Test Form D
(Dated: March 18, 2016)
Instructions: Before you do anything, make sure your name, ID and your test form type is on
your scantron. You have until 10:00am to finish this test. You may use one sheet of notes and a
calculato
Statistics 103: Final
Test Form C
(Dated: March 18, 2016)
Instructions: Before you do anything, make sure your name, ID and your test form type is on
your scantron. You have until 10:00am to finish this test. You may use one sheet of notes and a
calculato
Statistics 103: Final
Test Form A
(Dated: March 18, 2016)
Instructions: Before you do anything, make sure your name, ID and your test form type is on
your scantron. You have until 10:00am to finish this test. You may use one sheet of notes and a
calculato
Statistics 103: Final
Test Form B
(Dated: March 18, 2016)
Instructions: Before you do anything, make sure your name, ID and your test form type is on
your scantron. You have until 10:00am to finish this test. You may use one sheet of notes and a
calculato
Statistics 103 Fall 2013 Midterm Solutions
PROBLEM 1, (50 points)
A local retailer surveyed other local retailers and some online stores to find the average price of an
iphone. A survey of 32 local stores produced the following prices for iphones:
369
370