Chapter 2: Summarizing Data
Variable: Name of what is being counted, measured or observed.
Variable Types:
o Quantitative/Categorical
o Discrete/Continuous
Example: A company manufactures knobs for appliances (washing machines, dishwashers,
etc.). In one
Chapter 1: Introduction to Data Analysis
Preview:
Data and its science, statistics
Stationary and nonstationary processes; displaying data from each.
Assessing between and within variation.
Whats the IDEA?
Data have variation.
The variation has a pat
A study is an examination of a subject for the purpose of advancing knowledge.
Many studies require analysis of data. Data used in a study can arise in a number of
ways. Available data are data that were obtained prior to the study for purposes other tha
Rob Browne
Prof. Fujimori
Statistics I
26 September 2016
Data Analysis Lab 2
Statistics
Average_Grade
N
Valid
Missing
Mean
Std. Deviation
Minimum
Maximum
Percentiles 25
50
75
32
0
.8091
.13062
.42
.99
.7125
.8300
.9100
3. The distribution of the Average G
Rob Browne
Prof. Fujimori
Statistics I
15 September 2016
Data Analysis Lab 1, Investigation 2
A)
Hospital Admissions
Valid Assault
Cancer
Congestive Heart
Failure
Fall
Gun Shot Wound
Motor Vehicle
Accident
Total
Frequency Percent
1
5.0
1
5.0
Valid
Percent
Rob Browne
Prof Fujimori
Statistics
18 October 2016
Chapter 6 Write Up
1. If the area under the standard normal distribution curve and to the right of a z-score is
less than 0.5 then the z-score is: 0
2. Find the area under the standard normal distributio
Rob Browne
Prof Fujimori
Statistics I
11 October 2016
Chapter 5 Write Up
1. The sum of the probabilities of a discrete probability distribution must equal 1.
2. The following table: The value of A is equal to .25.
x
P(x)
1 0.125
2
A
3
0.5
4 0.125
3. Fill
Rob Browne
Prof Fujimori
Statistics I
29 September 2016
Chapter 4 Write Up
1. Complete the steps below to calculate the probability of choosing a 2, 4, 6, or 8:
a. Are the events choose a 2, choose a 4, choose a 6, choose an 8 mutually
exclusive? Explain.
1. The five number summary for the average mathematics achievement scores for ninth
graders in 32 different countries is 327, 428.25, 504.5, 554, 594.
a. Center: Mean:488.656
b. Spread: Range: 267
c. Shape: Bell-shaped, very slightly right-skewed
2.
a. Th
> Random variables reect measurements that can change as the experiment is
repeated
Random variables are denoted with capital letters, typically using X, Y, or Z,
Observed values are usually written with lower case letters, typically using x, y,
or z,
VV
Chapter 2: Organizing Data
2.1: Variables and Data
Variables are the characteristics of the individuals within the
population. The suggested approaches to analyzing problems vary by
the type of variable.
Qualitative or categor
Chapter 3: Descriptive Measures
Section 1: Measures of Center
Measure of center gives a general idea of the size of the data.
Example: Consider data on weights of people in a certain population. The center of
the data is near 8.5 pounds. Can you describe
Chapter 4: Probability Concepts
4.1: Probability Basics
Four ways to think about probability
1. Empirical Probability
To estimate the probability of a tossing a coin and getting a head, toss the coin
100 times, count the number of heads, say 42. The empir
STATISTICS NOTES
CHAPTER 1
!1
Chapter 1: The Nature of Statistics
Section 1: Statistics Basics
Statistics: A branch of mathematics that deals with the
Collection
Organization
Presentation
Analysis
Interpretation
of information in order to draw conclu
Homework 2
MA 36001: Number Theory
Due: Tuesday, February 10, 2015
Instructions: Prepare neatly written solutions to the following problems to be turned in
for grading. All proofs should be in paragraph form using complete sentences and proper
terminology
Homework 1
MA 36001: Number Theory
Due: Thursday, January 29, 2015
Instructions: Prepare neatly written solutions to the following problems to be turned in
for grading. All proofs should be in paragraph form using complete sentences and proper
terminology
MA150 Online Statistics
Project 1: Chapter 1 & 2
Name: Greg Chaplin
Date: September 16, 13
Chapter 1 - Page 8 # 1.1
Population: The collection of individuals or items under the consideration in a statistical study
Sample: That part of the population from
Name: Greg Chaplin
Project 2 Unit 3: Chapter 3 Sections 1, 2, 3, 4
Explain your answers. No work, no credit!
1.
Obtain the five-number summary for the given sample. (10 points)
Here are the average mathematics achievement scores for ninth graders in 32 co
Greg Chaplin
Project 3
Statistics
Worcester State University
MA150 Statistics 1 Online
Instructor: Mary Fowler
Project 3: Chapter 14 Section 1-4 and Chapter 15 Section 1
Name: Gregory Chaplin
This project requires that you produce a scatter plot of the Ba
Statistics OnLine Project 4: Chapter 4
Greg Chaplin
1.
If you randomly choose a card from a standard deck of cards.
Complete the steps below to calculate the probability of choosing a 2, 4, 6, or 8:
A. Are the choose a 2, choose a 4, choose a 6, choose a
Worcester State University
MA150 Statistics 1
Statistics Online Project 5: Chapter 5
Name: Gregory Chaplin
Instructor: Mary Fowler
1.
The sum of the probabilities of a discrete probability distribution must equal 1.
2.
The following table is a probability
Worcester State University
Project 7 Chapter 7 sections 1 2 3
Name: Greg Chaplin
MA150 Statistics 1
Instructor: Mary Fowler
1. A simple random sample is taken from a normal population. Choose the one statement
that is true.
a. We can never ensure that the
MA150_Stat OL
Project 8 CH 8 Sections 1-4
Greg Chaplin
Project 8: Part 1 read the five problems and determine if you would use a z-interval or a t-interval and
why. You do not need to calculate the interval:
Problem
Constructa95%confidenceintervalforthepo
Name_
Exam
Worcester State University
Statistics Practice Final
MA 150
1. Residential students on a college campus are categorized according to their class standing (Freshman,
Sophomore, Junior, Senior) and whether or not they have a car on campus. The ta