# Textbook Notes for Andrew Hathaway

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## SOAN 3120 Chapter Notes - Chapter 1: Exploratory Data Analysis, Time Series

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Data includes information about some group of individuals (usually people, but can also be animals or things) Categorical variables: places and individ

View Document## SOAN 3120 Chapter Notes - Chapter 3: Abbreviation, Standard Scale, Standard Deviation

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A density curve is a curve that: o. Is always on or above the horizontal axis: has area exactly 1 underneath it. A density curve describes the overall

View Document## SOAN 3120 Chapter Notes - Chapter 15: Central Limit Theorem, Sampling Distribution

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A parameter is a number that describes the population. In practice, the value of a parameter is not known because we can rarely examine the entire popu

View Document## SOAN 3120 Chapter Notes - Chapter 18: Statistical Inference, Inference, Confidence Interval

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Any confidence interval or significance test can be trusted only under specific conditions. If (cid:455)ou(cid:396) data do(cid:374)"t (cid:272)o(cid:3

View Document## SOAN 3120 Chapter Notes - Chapter 5: Dependent And Independent Variables, Standard Deviation, Scatter Plot

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## SOAN 3120 Chapter Notes - Chapter 16: Funen, Normal Distribution

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Statistical inference provides methods for drawing conclusions about a population from sample data: uses the language of probability to say how trustwo

View Document## SOAN 3120 Chapter Notes - Chapter 5: Standard Deviation, Dependent And Independent Variables, Scatter Plot

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A regression line is a straight line that describes how a response variable y changes as an explanatory variable x changes. We often use a regression l

View Document## SOAN 3120 Chapter Notes - Chapter 4: Standard Deviation, Txe, Dependent And Independent Variables

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A response variable measures an outcome of a study o. An explanatory variable may explain or influence changes in a response variable o. The idea behin

View Document## SOAN 3120 Chapter Notes - Chapter 14: Confidence Interval, Sampling Distribution, Standard Deviation

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Provides methods for drawing conclusions about a population from sample data. Simple conditions for inference about a mean: or other practical difficul

View Document## SOAN 3120 Chapter Notes - Chapter 8: Simple Random Sample, Response Bias, Call Screening

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The population in a statistical study is the entire group of individuals about which we want information: time, cost, and inconvenience preclude contac

View Document## SOAN 3120 Chapter Notes - Chapter 15: Null Hypothesis, Statistical Parameter, Confidence Interval

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Use a confidence interval when your goal is to estimate a population. Based on asking what would happen if we repeated the sample of experiment many ti

View Document## SOAN 3120 Chapter Notes - Chapter 17: Alpha, Standard Deviation, Null Hypothesis

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