Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Exam 1 Review Questions.
1. Administrators at a large university want to know the average debt incurred by their graduates. Surveys were mailed to 210 graduates asking them
to report their total student loan debt. Identify the population and sample in
the
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
STA2014 Review For Exam 2
1.The data below are the nal exam scores of 10 randomly selected history students and the number of hours they
slept the night before the exam. Suppose we want to predict the score of the exam using the hours slept the night befo
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Sampling Distributions and the Central Limit Theorem
Whenever we select a random sample from a population, collect data from the members of the
sample, and summarize the data values in the form of a statistic, that statistic is a random variable
(dependin
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Case Study
WTVX
WTVX, Channel 6, is located in Eugene, Oregon, home of the Universitys of
Oregons football team. The station was owned and operated by George Wilcox, a former
Duck (University of Oregon football player). Although there were other televisio
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
ST 3163
1. In your own words, what is meant by the statement that correlation does
not imply causality (Section 102)?
Correlation occurs when values of a variable are somehow associated with the
values of another variable. However, one must not assume th
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Introduction to the TI83/84
Clearing the memory of the TI83/84 graphing calculator:
Some of you may have used calculators, and these calculators may have items stored in memory by the
previous owner. In addition, after you have been using your calculato
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
STA 2014 Elementary Statistics for Health and
Social Science Majors Fall 2010
Section: 82136
Instructor: Pablo Crespo
Oce: Building 51 Room 3127
Phone: ?
Email: [email protected]
URL:http:/www.unf.edu/~pablo.crespo/
Oce Hours: MW 1:302:30 PM and TR 1
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
STEPS IN STATISTICAL HYPOTHESIS TESTING
Step 1: State the null hypothesis, H0, and the alternative hypothesis, Ha. The alternative hypothesis
represents what the researcher is trying to prove. The null hypothesis represents the negation of what the
resear
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Review 3 STA 2014
1. Mahalo Burgers, Inc, claims that the mean gross revenue of Mahalo Burgers stores is $300000 per year with
a standard deviation of $72000.
a) If a random sample of 38 stores in the franchise is selected, describe the sampling distribut
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Statistics 2014, Spring 2010
Final Exam Review Topics
Chapter 1 Data Collection
Statistics, Population, Sample, Parameter, Statistic, Variable, Data
Branches of statistics: Descriptive, Inferential
Types of data: 1) Attribute, or qualitative 2) Numerical,
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Chapter 2 Organizing and Summarizing Data
Definition: When data are in their original form, as collected, they are called raw data.
We want to be able to visualize the characteristics of a data set; hence we construct graphical
representations of the data
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Statistics 2014
Among the skills that you will be learning in this course are techniques for graphing data. Below is a
type of graph that we will be looking at later in the course. You might find that this graph provides
you with some useful information.
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
STEPS IN STATISTICAL HYPOTHESIS TESTING
Step 1: State the null hypothesis, H0, and the alternative hypothesis, Ha. The alternative
hypothesis represents what the researcher is trying to prove. The null hypothesis represents the
negation of what the resear
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Hypothesis Tests Some Examples
Example 1: Directional hypothesis test for a population mean.
The U. S. Food and Drug Administration recommends that individuals consume 1000 mg of
calcium daily. The International Dairy Foods Association (IDFA) sponsors and
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Finding the Mean (Expectation), Variance, and Standard Deviation
of a Discrete Probability Distribution
Using the STAT Menu of the TI83/TI84 Graphing Calculator
1. To find the mean, , of the distribution of a discrete random variable X:
a) Choose STAT,
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Confidence Interval Estimation of a Population Proportion, a Example
Assume that I select a random sample of size n from a population, where n is large. For each
member of the sample, I want the answer to a yesorno question. For sample member i, let
X i
Elementary Statistics for Health and Science Majors
STA 2014

Fall 2010
Binomial Distribution, Example 2
Assume that the population of interest is the population of all adult (at least 18 years old) males
in the U. S. Assume that a certain proportion, p, of this population are over 6 feet tall, where
0 p 1. We will select a r