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STAT1008 (14)

Study Guides for STAT1008 at Australian National University

Quantitative Research Methods

STAT1008 Study Guide - Midterm Guide: Binomial Distribution, Confidence Interval, Dependent And Independent Variables
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Quantitative and Categorical: Sampling distribution Bootstrap - When numbers are in categories they are ...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Type I And Type Ii Errors, Confidence Interval, Null Hypothesis
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Probability: Standard Deviation of the Error (residual Standard ( ) P(B if A) = Error): () ...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Simple Random Sample, Dependent And Independent Variables, Bar Chart
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2.1 Categorical variables 3.3 Constructing bootstrap condence intervals ...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Normal Distribution, Confidence Interval, Prediction Interval
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Complement: P(not A) = 1P(A). The standard normal distribution has mean zero and standard deviation 10.3 dropping a predictor will not explain more Additive: P(A or B) = P(A)+P(B)P(A and B). one, Z N(0, 1). variability Mul...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Central Limit Theorem, Confidence Interval, Statistical Hypothesis Testing

Distribution of a Sample Proportion The standard error for is (1). The larger the sample size, the smaller the SE. Sufficiently Large n The larger the sample size...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Confidence Interval, Observational Error, Dependent And Independent Variables

Inference for Slope and Correlation Simple Linear Model The population/true simple linear model is: 0and 1are unknown parameters. Estimate the least square line: = + ...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Bar Chart, Standard Deviation, Quartile

Describing Data 2.1 Categorical (Discrete) Variables One Categorical Variable Frequency table shows the number of cases that fall in each category. The proportion in a category is found by number in that catego...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Bayes Estimator, Venn Diagram, Conditional Probability

Probability 11.1 Probability Rules Event something that either happens or doesnt happen (is true or is not true). Probability of event (A) is the long-run frequency or proportion of times the event occurs. ...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Null Hypothesis, Statistical Hypothesis Testing, Statistic

4.1 Hypothesis Tests Statistical test - uses data from a sample to assess a claim about a population. Statistical tests are framed formally in terms of two competing hypotheses: Null hypothesis (H ) - clai...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Central Limit Theorem, Confidence Interval, Normal Distribution

Normal Distribution Density Curve A density curve is a theoretical model to describe a variable's distribution. Think of a density curve as an idealised histogram, where: 1. The total area under the curve is e...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Dependent And Independent Variables, Test Statistic, Confounding

Multiple Regression Response variable: Y (quantitative) k predictors: X1, X2, Xk(quantitative or 0/1 categories) Model: Y = 0 X 1 1X +2 2+ X +k k ~ N(0,) and independent. What to do? Estimat...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Sampling Distribution, Confidence Interval, Interval Estimation

Sampling Distributions Statistic a number that is computed from data in a sample. Parameter a number that describes some aspect of a population. Point estimate - we use the statistic from a sample as a poi...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Simple Random Sample, Dependent And Independent Variables, Sampling Bias

Collecting Data Data are a set of measurements taken on a set of individual units. 1.1 The Structure of Data Cases - the subjects/objects that we obtain information about. Variable - any characteristic th...

Statistics
STAT1008
Bronwyn
STAT1008 Study Guide - Final Guide: Dependent And Independent Variables, Scatter Plot

2.6 Two Quantitative Variables: Linear Regression The Regression Line The regression line provides a model of a linear association between two variables, and we can use the regression line on a scatterplot t...

Statistics
STAT1008
Bronwyn

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