5/27/2015
Introduction and
Section 1.1: The Structure
of Data
Professor Kathryn L. Dobeck
Lorain County Community College
Elyria, OH
Statistics: Unlocking the Power of Data, Lock5
What is Data?
Scientists seek to answer questions using rigorous
methods an
Events
Probability (Section 11.1)
An event is any collection of results or outcomes
of a procedure or an experiment
Examples of events:
1. Drawing a spade from a shuffled deck of cards
Professor Kathryn Dobeck
Lorain County Community College
Elyria, OH
S
Lab 1 Tutorial: One Variable Statistics
In this tutorial, I will walk you through the background information you need to complete Lab 1. You will first
follow along using the Student Survey Dataset from our textbook. Make sure you are obtaining the same
r
Lab 2 Tutorial for Two Variable Statistics
In this tutorial, I will walk you through the background information you need to complete Lab 2. You will first
follow along using the Student Survey Dataset from our textbook. Make sure you are obtaining the sam
MTHM 181
Exam #1 Answer Key
Please read and follow the directions carefully. Point values for each question are in parentheses after the
question number. Partial credit will be given for correct work shown and NO credit will be given if no work is
shown.
MTHM 181
Exam #5 Answer key
100 Points
Please read and follow the directions carefully. Point values for each question are in parentheses after each
question. Partial credit will be given for correct work shown and NO credit will be given if no work is sh
MTHM 181
Exam #3 Answer Key
Please read and follow the directions carefully. Point values for each question are in parentheses after the
question number. Partial credit will be given for correct work shown and NO credit will be given if no work is
shown.
Use these check lists (followed by the corresponding sections/chapters) to make sure that you are ready
for the first exam. The first exam covers chapter 1, 2, 3, and 11.1. Please print the exam 1 review on
Canvas, under Modules.
Exam is 100 points, part
MTHM 168 Lab 1 One categorical and one quantitative variable
58 points total
Instructions:
1) Start the lab ahead of time and finish it before the due date.
2) Lab 1 answers must be submitted on CANVAS, under Assignments, click on Lab #1 Canvas Assessment
MTHM 168 Lab 1 One categorical and one quantitative variable
58 points total
Instructions:
1) Start the lab ahead of time and finish it before the due date.
2) Lab 1 answers must be submitted on CANVAS, under Assignments, click on Lab #1 Canvas Assessment
MTHM 168 Lab 1 One categorical and one quantitative variable
58 points total
Instructions:
1) Start the lab ahead of time and finish it before the due date.
2) Lab 1 answers must be submitted on CANVAS, under Assignments, click on Lab #1 Canvas Assessment
Summary of Key Formulas and Facts
We are
measuring
Distribution
Conditions
Standard Error
Single
proportion
Normal
np 10 and
n(1 p ) 10
SE
Single
mean
t
df n 1
n 30 or
Reasonably normal
Diff. in
proportions
Normal
n1 p1 10, n1 (1 p1 ) 10,
n2 p2 10, and n
1/17/2017
Collecting Data:
Experiments
Professor Cosgriff
Text: Statistics - Unlocking the Power of Data
1 - To estimate the proportion of LCCC students who
believe that LCCC should be a smoke-free campus, you
compute the proportion that say yes after res
1/17/2017
Describing Data: One Variable (cont.)
Professor Cosgriff
Text: Statistics - Unlocking the Power of Data
One quantitative variable: Measures of Spread,
Measures of Location, Outliers, and Boxplots
(Sections 2.3 and 2.4)
The Basics
Class 1 Class 2
1/17/2017
Describing Data: Two Variables
Professor Cosgriff
Text: Statistics - Unlocking the Power of Data
Two categorical (2.1)
Quantitative and categorical (2.4)
Two quantitative (2.5)
The exam scores shown in the
histogram are
1.
2.
3.
Symmetric
Left-s
Name:
Date:
. Use the following to answer questions ac:
A high school senior is collecting data on the colleges in which she is interested. Identify
the variables as either categorical or quantitative.
Type of college: Private or Public college I
Tuitio
3/15/2017
Hypothesis Testing:
Determining Statistical Significance
(Section 4.3)
Professor Cosgriff
Text: Statistics - Unlocking the Power of Data
The smaller the p-value the
1.
2.
stronger the evidence against the null
hypothesis
stronger the evidence fo
Test to determine if a function y=f(x) is even, odd or neither:
Replace x with -x and compare the result to f(x).
If
f(-x) = f(x), the function is even.
If f(-x) = - f(x), the function is odd.
If f(-x) f(x) and f(-x) -f(x), the function is neither even no