Stat 217 Introduction to Statistical Concepts and
Methods Winter 2008
Exam 1 Preparation
- Logistical
details
- Thursday,
January 31
- 110
minutes
- Open-book,
open-notes
- Calculator
needed
- Coverage
- Topics
1-10
- Notes
from days 1-7
- Quizzes
1-10
- Resources
available online
- This
preparation sheet
- Day-by-day
notes
- Optional
assignments, solutions
- Quiz
solutions
- Types
of questions to expect
- Short
answer (e.g., identifying types of
variables, distinguishing observational studies from experiments)
- Calculations
(e.g., five-number summary, relative risk)
- Interpretations
and explanations (e.g., interpreting boxplots,
explaining whether a measure is resistant)
§
Possibly of Minitab output
- Similar
to in-class examples, quizzes, optional assignments
- Advice
for preparing
- Prepare
and organize your notes carefully
- Don’t
study less because it’s open-notes/book
- Plan
not to rely on your notes/book too much
- Re-read
the day-by-day notes
- Re-read
highlighted passages, watch-out, wrap-up sections of book
- Focus
on understanding, not memorization
- Review
and make sure that you can answer the quiz, optional assignment questions
- Ask
questions during review class session, office hours
- Advice
during the exam
- Show
up on time!
- Be
cognizant of time constraint
- Read
carefully
- Relate conclusions to
context
- Write and explain
clearly
- Do
not elaborate excessively
- Show
details of calculations
- Take
advantage of partial information
Outline (of most
important topics)
- Observational
unit, variable
- Categorical
vs. quantitative
- Explanatory
vs. response
- Population,
sample
- Parameter,
statistic
- Sampling
- Bias
- Random
sampling
- Effect
of sample size
- Types
of studies
- Observational
studies vs. controlled experiments
- How
to distinguish
- Scope
of conclusions
- Designing
experiments
- Comparison
- Control
group
- Placebo
effect
- Blindness
- Randomization
- Dotplot, histogram, stemplot,
boxplot
- Features:
shape, center, spread, outliers
- Mean,
median (center)
- Standard
deviation, IQR, MAD (spread)
- Resistance
- Five-number
summary
- Outlier
test
- Empirical
rule
- z-score
- Two-way
tables
- Segmented
bar graph
- 2
x 2 tables
- Marginal
distributions
- Conditional
proportions
- Relative
risk