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STATS (276)
Brenda Gunderson (97)

Class Notes for Brenda Gunderson

Introduction to Statistics and Data Analysis

STATS 250 Lecture Notes - Lecture 2: Interquartile Range, Quartile, Box Plot
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Stats Lecture 2 Numerical Summaries of Quantitative Data Notation for generic set of data: 1 ,2 ,3,n Where n= # of items in the dataset or sample size Describing the Location/Center Mean--numerical average value R...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 1: Bar Chart, Categorical Variable, Histogram
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Stats Lecture 1 I. Intro: Definitions and Course Goal A. Definitions Statistics: are numbers measured for some purpose Statistics: is a collections of procedures and principles for gather...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 10: Scatter Plot
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Lab 10: Linear Regression Regression Overview:  Regression Analysis: describing and assessing the significance of relationships b/w 2 quantitative variable  Response Variable: “dependent “y”  Exp...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 15: Null Hypothesis, Statistical Hypothesis Testing, Confidence Interval
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Lecture 15: Hypothesis Tests forStat 250 Gunderson Lecture Notes  Learning about a Population Mean    ...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 13: Sampling Distribution, Standard Deviation, Unimodality
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Lecture 13: Population mean, Distribution for a sample Mean Stat 250 Gunderson Lecture Notes  Lecture 13: Population mean and Distribution forlation Mean  ...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture 12: Lecture 12
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Stat 250 Gunderson Lecture Notes  Learning about the Difference in Population Proportions    ...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 11: Dependent And Independent Variables, Standardized Test
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Sampling Distribution of the Difference in Two (Independent) Sample Proportions If the two sample proportions are based on independent random samples from the two populations and if all of the quantities nipi, nh(-p), n2p2...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 9: Standard Deviation, Normal Distribution, Confidence Interval
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Lecture 9: Estimating Proportions with Confidence 10.1: Overview of Confidence Intervals Confidence Intervals concept: Use sample data to estimate a population parameter Population (size N) = the whole group that we want t...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 7: Standard Deviation, Standard Normal Deviate, Random Variable
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Lecture 7: 8.5 General Continuous Random Variables Definition: A curve (or function) is called a Probability Density Curve if: 1. It lies on or above the horizontal axis. 2. Total area under the curve is equal to 1. KEY ...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 8: Statistical Hypothesis Testing, Standard Error, Statistical Parameter
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Lecture 8: Introduction to Inference and Understanding Sampling Distributions 9.1 Parameters, Statistics, and Statistical Inference Some distinctions to keep in mind: Population versus Sample Parameter versus Statistic P...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 10: Test Statistic, Null Hypothesis, Statistical Significance
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Lecture 10: Testing about a Population Proportion The Basic Steps in Any Hypothesis Test: Step 1: Determine the null and alternative hypotheses. Step 2: Verify necessary data conditions, and if met, summarize the data into...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 6: Standard Deviation, Random Variable, Sample Space
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Lecture 6: Random Variables 8.1 Random Variables Definition: A random variable assigns a number to each outcome of a random circumstance, or, equivalently, a random variable assigns a number to each unit in a population. ...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 5: Conditional Probability
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Lecture 5: Probability 7.1 Random Circumstance and Interpretations of Probability A few ways to think about PROBABILITY: (1) Personal or Subjective Probability P(A) = the degree to which a given individual believes that ...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture Notes - Lecture 4: Simple Random Sample, Confounding, Dependent And Independent Variables
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Lecture 4: Gathering Useful Data for Examining Relationships 6.1 Speaking the Language of Research Studies Definitions: Observational Studies: The researchers simply observe or measure the participants (about opinions, be...

Statistics
STATS 250
Brenda Gunderson
STATS 250 Lecture 3: Lecture 3
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Lecture 3: Sampling: Surveys and How to Ask Questions 5.1 Collecting and Using Sample Data Wisely Definitions: Descriptive Statistics: Describing data using numerical summaries (such as the mean, IQR, etc.) and graphical ...

Statistics
STATS 250
Brenda Gunderson
Statistics - Reference Guides

This Guide provides an easy to follow summary of all basic principles that are the foundation to Statistics and Probabilities. Using a combination of charts and sample equations, the key concepts are developed and the esse...

Econometrics
ETC2430
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