Framing and testing hypotheses

Dec 19, 2012

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Framing and testing hypotheses

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Hypotheses Testing

Hypotheses Testing Example 1 We have tossed a coin 50 times and we got k = 19 heads Should we accept/reject the hypothesis that p = 0.5 (the coin is fair) Null versus Alternative Null hypothesis (H 0 ): p = 0.5

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Statistical Hypotheses Testing

Statistical Hypotheses Testing. SCCC 312 Lecture. Overview of this Lecture. The problem of hypotheses testing

596 views • 33 slides

Statistical Hypotheses Testing

Statistical Hypotheses Testing. Stat 700 Lectures Hypothesis Testing. Overview of this Lecture. The problem of hypotheses testing

731 views • 43 slides

Chapter 12: Testing Hypotheses

Chapter 12: Testing Hypotheses. Overview Research and null hypotheses One and two-tailed tests Errors Testing the difference between two means t tests. You already know how to deal with two nominal variables. Independent Variables. Nominal Interval.

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Framing and testing hypotheses

Framing and testing hypotheses. Hypotheses. Potential explanations that can account for our observations of the external world They usually describe cause and effect relationships . Collecting observations is a means to the understanding of a cause. Observations from .

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Chapter 12: Testing Hypotheses

Chapter 12: Testing Hypotheses. Motivating Example: UNT Stadium. Research Question : Do more than 50% of all UNT students support the new stadium? Study Options Census : Ask all 35,000+ students Is this feasible? Sample : Ask a smaller random sample

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Confirmatory Statistics: Identifying, Framing and Testing Hypotheses

Confirmatory Statistics: Identifying, Framing and Testing Hypotheses. Andrew Mead (School of Life Sciences). Contents. Philosophy and Language Why test hypotheses? Underlying method Terminology and Language Statistical tests for particular hypotheses

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Hypothesis Testing: Hypotheses

STAT 101 Dr. Kari Lock Morgan 9/18/12. Hypothesis Testing: Hypotheses. SECTION 4.1 Statistical test Null and alternative hypotheses Statistical significance. Extrasensory Perception. Is there such a thing as extrasensory perception (ESP) or a “sixth sense”? Do you believe in ESP?. Yes

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Confirmatory Statistics: Identifying, Framing and Testing Hypotheses

Confirmatory Statistics: Identifying, Framing and Testing Hypotheses. Simon French simon.french@warwick.ac.uk. Cynefin and statistics. Unique events. exploratory analyses. Repeatable events. Events?. Estimation and confirmatory analysis. Value focused thinking.

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Hypotheses Testing

Hypotheses Testing. Chapter 8. Hypothesis Testing. First we state a hypothesis about a population. We hypothesize that the mean IQ for registered voters in the US is μ = 110

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Generating and Testing Hypotheses

Generating and Testing Hypotheses. Marzano’s High Yield Instructional Strategies “The most important factor affecting student learning is the teacher.” Robert Marzano. Learning Target.

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Testing hypotheses

Testing hypotheses. Continuous variables. Hypothesis Lower income Higher murder rate. L. L. H. H. L. L. H. L. H. L. Median income. H. L. Murder rate. L. H. L. H. L. H. H. H. H.

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Testing Hypotheses

Testing Hypotheses. Basic Research Designs. Descriptive Designs: Descriptive Studies : thoroughly describe a single variable in order to better understand it

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Testing alternative hypotheses

Testing alternative hypotheses. Outline. Topology tests: Templeton test Parametric bootstrapping (briefly) Comparing data sets. Topology tests. The best tree for your data contradicts a prior hypothesis. This does not mean that the data refute the hypothesis

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Testing Hypotheses about Proportions

Testing Hypotheses about Proportions. Hypothesis tests, null hypothesis, P-values, one and two sided z-tests on a proportion. Comparing Hypothesis testing to a criminal trial 1- Put together a case. 2- Gather evidence . 3- Examine evidence. 4- State the verdict.

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Hypotheses Testing

Hypotheses Testing. Example 1. We have tossed a coin 50 times and we got k = 19 heads Should we accept/reject the hypothesis that p = 0.5 (the coin is fair). Null versus Alternative. Null hypothesis (H 0 ): p = 0.5

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Generating & Testing Hypotheses

Generating & Testing Hypotheses. 23% Effect. Systems Analysis – Predict what would happen if part of a system changed. Systems Analysis. Design a Satellite. Virtual Pond. Habitats. Photos by John Hamilton. Problem Solving : Evaluate various approaches to solving a problem.

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Generating & Testing Hypotheses

Generating & Testing Hypotheses. Research-Based Strategies for Increasing Student Achievement Compiled from: Classroom Instruction That Works! By: Robert J. Marzano, Debra J. Pickering & Jane E. Pollock Classroom Instruction That Works! Facilitator’s Manual By: McREL

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TESTING HYPOTHESES

TESTING HYPOTHESES. Two ways of arriving at a conclusion. 1. Deductive inference. sample. population. 2. Inductive inference. sample. population. IF YOUR DATA ARE:. 1. Continuous data. 4. Equal variance (F-test). 2. Ratio or interval.

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Testing Hypotheses

Testing Hypotheses. Hypothesis about a mean. Example

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Generating and Testing Hypotheses

Generating and Testing Hypotheses. Using Technology with Classroom Instruction that Works Staff Development Spring 2011. Please read Chapter 11 on pages 202 to 216 prior to working through this PowerPoint. Generating and Testing Hypothesis. Engages students in complex mental process

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Testing Hypotheses I

Testing Hypotheses I. Lesson 9. Descriptive vs. Inferential Statistics. Descriptive quantitative descriptions of characteristics Inferential Statistics Drawing conclusions about parameters ~. Hypothesis Testing. Hypothesis testable assumption about a parameter

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Framing and testing hypotheses

Framing and testing hypotheses

Presentation Transcript

Hypotheses Testing

Statistical Hypotheses Testing

Statistical Hypotheses Testing

Chapter 12: Testing Hypotheses

Framing and testing hypotheses

Chapter 12: Testing Hypotheses

Confirmatory Statistics: Identifying, Framing and Testing Hypotheses

Hypothesis Testing: Hypotheses

Confirmatory Statistics: Identifying, Framing and Testing Hypotheses

Hypotheses Testing

Generating and Testing Hypotheses

Testing hypotheses

Testing Hypotheses

Testing alternative hypotheses

Testing Hypotheses about Proportions

Hypotheses Testing

Generating &amp; Testing Hypotheses

Generating &amp; Testing Hypotheses

TESTING HYPOTHESES

Testing Hypotheses

Generating and Testing Hypotheses

Testing Hypotheses I

Generating & Testing Hypotheses

Generating & Testing Hypotheses