Chapter 2
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Generalization: How Broadly Do the Results Apply?
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Chapter Overview
This chapter is about generalization, one of the four pillars of inference: strength, size, breadth, and
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cause. How broadly do the conclusions apply?
Polling organiza
Parameter and OneSided or TwoSided hypothesis?
For each scenario below, identify: (1) the parameter of interest (in words) and (2) the hypotheses (in
words and symbols) corresponding to the research question. When determining hypotheses, pay special
att
Chapter 1: Significance
Six Steps of a Statistical Investigation
Step 1. Ask a research question
Step 2. Design a study and collect data
Step 3. Explore the data
Step 4. Draw inferences beyond the data
Step 5. Formulate conclusions
Step 6. Look back and a
Chapter P: Introduction and Preface
Six Steps of a Statistical Investigation
Step 1. Ask a research question
Step 2. Design a study and collect data
Step 3. Explore the data
Step 4. Draw inferences beyond the data
Step 5. Formulate conclusions
Step 6. Loo
Chapter 1: Introduction to Statistical Inference: One Proportion
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Chapter 1. Introduction to Statistical Inference:
One Proportion
Learning Objectives:
Begin to understand the process of statistical investigations as it relates to the scientific
method:
Chapter 2 Generalization: How broadly do the results apply?
Sampling from a finite population
Quantitative variable Contains only numeric data
Samples and population
Statistic and Parameter:
Some of the commonly used parameter and statistic:
Parameter
Sta
What is the first step to be performed in the following mathematical expression? (X)2 ?

Add the scores.
Using letter grades (A, B, C, D, and E) to classify student performance on an exam is an example
of measurement on a(n) _ scale of measurement.
 ord
FALL 2016 STAT 218017 EXAM 1 REVIEW
FALL 2016 STAT 218017 EXAM 1 REVIEW
Question 1:
A questionaire had 14 questions with two answers TRUE and FALSE. A person got 10 of them
correct. The goal of the study is to check if the proportion of correct answers
Chapter 2:
A faculty researcher, Dr. Sameer, at California Polytechnic State University (Cal Poly) set up a
research question about how much time on average does Cal Poly students spend on watching
television. Is it 2.75 hours? Dr. Sameer surveys a random
Practice problems from chapter 2, 3, 4 and 5 for the 2nd Exam
Chapter 2:
A faculty researcher, Dr. Sameer, at California Polytechnic State University (Cal Poly) set up a
research question about how much time Cal Poly students spend on watching television.
Structure of Exam 2:
Points possible: 50
Question 1: Match the following
5 points
Question 2: True and False
2 points
Question 3: Fill up the blanks
2 points
Question 4: Combining Chapter 2 and 3
21 points
Question 5: Combining Chapter 4 and 5.1
20 points