STP226, Review notes for Test #2. (chapters 7-9)
1. Know new vocabulary and symbolic notation :
normally distributed variable ( X ~ N(,) )
normal and standard normal distribution curves (Z ~ N( 0, 1) )
standardized version of normal variable, z-score:
Exam 1 Concept Guide
Concept Checklist:
Be able to compare and contrast: descriptive statistics vs. inferential statistics, population vs.
sample,
observational studies vs. designed experiments, qualitative variable vs. quantitative variable,
discrete
vs
Courtney Doerfler
Group Problems - Chapters 2 & 3
Using data from Problem 3.187 pg. 139, do the following.
1. Using Statcrunch, construct the histogram. Does the histogram appear
to represent a symmetrical population distribution?
a. No, it is right skewe
Chapter 2:
Organizing Data
STP 226: Elements of Statistics
2.1: Variables and Data
Variable
Height
Age
Number of siblings
Sex
Marital status
Blood Type
Qualitative Variable
Sex
Marital status
Blood Type
Quantitative Variable
Height
Age
Number of siblings
STP 226
EXAM #3 A
Material from chapters 7-9
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Thi
Final Review
Hypertonic/ hypotonic
Connective tissues
Basic structure of the bone
How skin can be affected
Types of hairs
Functions of the skin
Layers of the skin (what find in each layer of skin)
Layer of skin in order
Regions of the bone (function of ea
Types of Statistics:
*sample is part of a population observed or tested; population is group of individuals under study
Sampling Procedures
-Simple Random Sampling (SRS): Most commonly used. Use of part of the population (a sample) to
examine the entire p
8/19/2012
Proportions
So far, we have examined measures (mean,
standard deviation) on data obtained through
measurements.
We have many instances where the data are
categorized.
In these situations proportions and percentages play
an important role.
Pr
8/18/2012
Two sets of data, X and Y; Both have 200 data points; both have
a mean of 179; Are they the same set of data?
Normal
80
120
x
120
160
200
240
280
y
100
Frequency
Descriptive Statistics
Measures of Variation (Dispersion)
Histogram of x, y
The sa
8/19/2012
Summarizing Data
Five Number Summary
Minimum Value in the data (min)
Maximum Value in the data (max)
Median for the data (M)
First Quartile (Q1)
25th Percentile
Median of the first half of the data
Third Quartile (Q3)
75th Percentile
Me
STP226 Review notes for Test #1, chapters 1-3, 5 and 6
Know new vocabulary and symbolic notation.
For example:
frequency, relative frequency, mean, median, quartiles, mode, interquartile range,
z-score or standard score, stem-and leaf diagram, box plot, s
8A
<28-Confidence Interval on a Single Population Mean-student slides.pdf>
8B
<29a-More on Confidence Intervals on a Single Pop Mean-student slides.pdf>
Use z-test to find confidence interval
In Minitab: find One-Sample Z for the mean, enter correct confi
8/10/2012
Summarizing Data
Data Summary
Important summary statistics for a distribution
of data can include:
Sample mean, x
Measures of the center
Sample median, M
Sample mode,
Sample variance, s2
Measures of Variability
Sample range, r
Notation
Exam
5A
<17-Introduction to Probability-students.pdf>
5B
<18a-Random experiments and Random variables-student slides.pdf>
5C
<18b-Events and Operations-student slides (1).pdf>
5D
<19-Probability and Events-student slides.pdf>
5E
<19b-Independent Events-student
2A
<01-Types of Statistics-students.pdf>
2B
<02-Types of Data and Variables - students.pdf>
2C
<03 - Data Organization - students.pdf>
2D
<04 - Graphing Data - students.pdf>
2E
<05-More on Graphs-students.pdf>
3A
<06 - Descriptive Measures - Measures of the Center-student slides.pdf>
3B
<07 - Variability-student slides.pdf>
3C
<08-Summarizing Data and Box Plots - student slides.pdf>
3D
<09-Proportions and More on Sampling - student slides.pdf>
3E
<10 - Populati
STP226 Elementary Statistics
Professor Jackiewicz
Study Guide Exam 1
Types of Statistics:
Descriptive Studies
Inferential Studies
Describing sample
Making an inference of full population based on
sample
Ex: % of females in a population
Ex: Based on sample
STP226, Review notes for Test #2. (chapters 7-9)
1. Know new vocabulary and symbolic notation :
normally distributed variable ( X ~ N(,) )
normal and standard normal distribution curves (Z ~ N( 0, 1) )
standardized version of normal variable, z-score: z =
6A
<23-Introduction to the Normal Distribution-student slides.pdf>
6B
<24-Areas Under the Standard Normal Curve-student slides.pdf>
6C
<25-Working with Normally Distributed Variables-student slides.pdf>
6D
<26a-Z sub Alpha-student slides.pdf>
6E
<26b-Norm
STP 226 Test 1 A
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STP 226 Statistics
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STP 226 Test 2 - Summer 2013
Page 1
STP 226 Statistics
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Test #2A
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