Please read the following instructions carefully, as they will affect your
grade if not followed!
When is Homework due?
Homework is due by 5:00pm the due date of an assigned homework.
If you submit multiple sheets of paper for your as
Show all your work for full credit and print JMP output whenever indicated!
1. Categorical or Quantitative? Classify each variable as categorical or quantitative.
(a) Salary of cashiers at a Colorado grocery
Decision Sciences 2010
DSCI 2010 (UCDenver)
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Part I Chapters 14 and 12
Chapter 1 Introduction: What is Statistics?
Chapter 2 Data
Chapter 3 Describing Categorical Data
EXAM I DSCI 2010 FORM A
Show all your work and write complete and coherent answers.
You should bring to the exam a calculator capable of taking square roots. You may not use your
cellphone as a calculator.
Provide units for numerical
Formula Sheet Stat 226 Final
y1 + y2 + . . . + yn
(y1 y )2 + (y2 y )2 + + (yn y )2
(yi y )2
X N (, 2 )
Z N (0, 12 )
X N ,
EXAM II STUDY GUIDE DSCI 2010
Below is a study guide for material covered on Exam 2. Formulas available to you on the exam are
given on the corresponding Formula sheet.
1. Introduction Chapter 1
What is Statistics? distinction between descriptive and inf
WORKSHEET ~ HYPOTHESIS TESTING
. For each a and observed signicance level (p-value) pair, indicate whether the null hypothesis
would be rejected.
(a) or = 0.05,p-va1ue = 0.10 +9 teieoi z
(b) a = 0.10, p-value = 0.05 uh ' ~
(0) ox = 0.01, p-value = 0.001 i
DSCI 2010 HOMEWORK 3 SUMMER 2013
DUE WEDNESDAY, JULY 3
NAME: Summon; SECTION:
1. Sample size calculations: How many observations do we need? Al?
though sample size calculations were not separately discussed in lecture, we
have the tools to perform them. S