EDPSY 490A: Basic Educational Statistics
Winter 2015, Tuesdays and Thursdays 4:30-5:50pm, Miller 301
Instructor:
Email
Office Hours
Min Li
minli@u.washington.edu
1:30-2:30pm on Thurs
Teaching Assistant:
Fraser Bocell
fbocell@u.washington.edu
1:30-2:30pm o

EDPSY 490A, Winter 2015
Homework 7 Chapter 7 (Part II) (20 points)
Due March 3rd 4:30pm
Name: _
CHAPTER 7, PART II: APPROXIMATING POWER
Homework Question 1
Imagine that you are writing a grant proposal in which you plan to randomly assign low-performing t

EDPSY 490 Section A, Winter 2015
Homework 2 Chapters 2-3 (10 points)
Due 4:30pm Jan 20
Name: _
Directions: Show all arithmetic work to receive full credit. Attach additional sheets of paper as needed.
1) In the following, we present several different test

Practiceproblemsforscalesofmeasurement
1/8/15
Identifythetypeofmeasurementscalesforthevariablesdescribedforeachscenario.
1. Whenplanningvacationtrips,youneedtodealwiththefollowingvariables:
O Therankofthehotels,suchas3stars,4stars
N Thenameoftheairlinetha

EDPSY 490A, Winter 2015
Final Homework 8 Chapter 10 (20 points)
Due March 6th (Friday) 4:30pm
Name: _
CHAPTER 10, REGRESSION/CORRELATION
Homework Question 1
For each of the following equations, compute Y for each value of X, with X ranging from 0 to 10, (

EDPSY 490A, Winter 2015
Homework 3 - Chapter 3 (10 points), Due Jan 27th 4:30pm
Name: _
1. This is an exercise in translating symbols into words. State what each of the following expressions
represents in words. For example, 2 = 12. would be written as Th

EDPSY 490A, Winter 2015
Homework 5 Chapter 6, Part I (10 pts)
Due Feb 17th 4:30pm
Name: _
Directions: You must show all calculations in order to receive credit. Use 3 decimal places in both your calculations
and answers. Show/attach all arithmetic work. F

Edpsy 490
Tests of Significance Handout II
Type of
Data
(Scale)
Interval
Type of
Test
z-test
Null
Hypothesis
(Neil)
H0: = _
Goodness of Fit
(1-group)
Alternative
Hypothesis
(Us)
H1: _.
Formula
Z=
X 0
x
or more simply:
Note: true
variance (2)
is known
1 =

EDPSY490A Winter 2015: Fake Quiz
(Variability and Confidence Interval)
Name: _
Direction: For some questions, you need the information from the t table.
1. Compute the estimated variance (s2) for the following sample. Circle your answer.
X: cfw_2, 5, 8, 9

EDPSY 490 A, Winter 2015
Homework 1 Measurement Scales (5 points) (handwrite legibly)
Due 4:30pm Jan 13
Name: _
1) Think about measurable variables that you might collect from your current or desired field/program of
study (e.g., how principals perceive s

Practice Questions of Midterm EDPSY 490A Winter 2014
These questions are examples for you to get ideas about the type of questions that will likely appear in the
midterm exam. So its okay to check your text and notes. BUT remember when you take the midter

EDPSY 490A, Winter 2015
Homework 6 Chapter 6 (Part II) & Chapter 7 (20 pts)
Due Feb 24th 4:30pm
Name: _
CHAPTER 6, PART II: APPROXIMATING POWER
Homework Question 1
Imagine that you are writing a grant proposal in which you plan to give a particular math i

EDPSY 490A Winter 2015
Homework 4: Variability (Ch. 4) & Confidence Intervals (Ch. 5) (15 points)
Due 4:30pm Feb 3rd
Name: _
Directions: Label your answers using the correct symbols as given (i.e., X , SS, s2, and s) and show
ALL arithmetic work (attach a

Edpsy 490
Analysis of Variance (ANOVA) Handout III
Analysis of Variance (ANOVA) is a test of means (a test of independence) and includes an omnibus F-test as well as
multiple comparisons (2-group t-tests). The F-test tests whether there are mean differenc