Notes Over 2.2 1 3 5 8 7 Identifying Functions - Numerically Decide whether the relation is a function. 1. Input Output A function , because every input goes to only one output Not a function , because 4 goes to both 3 and 5

ByMajor Points. Formal Tests of Mean Differences Review of Concepts: Means, Standard Deviations, Standard Errors, Type I errors New Concepts: One and Two Tailed Tests Significance of Differences . Important Concepts. Concepts critical to hypothesis testing Decision Type I error

ByDrosophila Lab: Exploring Genetics. AP recommended lab. Two Tasks to Complete. Pre-lab Questions from 12 Recomm. Labs (link from my website) Computer Simulated Lab: “Gene Pool” drive ***Answer Questions on a separate paper. To Access the Lab Simulation for Drosophila.

ByT TEST. DEFINITION OF TERMS. T – Test – the statistical test for comparing a mean with a norm or for comparing two means with small sample sizes (n≤30). Formula: __ X - µ

ByChi-square and F Distributions. Children of the Normal. Distributions. There are many theoretical distributions, both continuous and discrete. We use 4 of these a lot: z (unit normal), t, chi-square, and F.

ByApplications of Derivatives. Curve Sketching. What the First Derivative Tells Us:. Suppose that a function f has a derivative at every point x of an interval I. Then:. What This Means:.

By8.2 Testing the Difference Between Means (Small, Independent Samples). Statistics Mrs. Spitz Spring 2009. Objectives/Assignment. How to perform a t-test for the difference between two population means, 1 and 2 using small independent samples. Assignment: pp. 384-388 #1-24 all.

ByFrom Unit Root To Cointegration. Putting Economics into Econometrics. Many (perhaps most) macroeconomic variables are non stationary Many of these are difference stationary, I(1), variables. Economics - many variables have stable long-run relationships. Consumption - Income

ByChapter 10: The t Test For Two Independent Samples. Independent-Measures Designs. The independent-measures hypothesis test allows researchers to evaluate the mean difference between two populations using the data from two separate samples.

By6.2 Confidence Intervals for the Mean (Small Samples). Statistics Mrs. Spitz Spring 2009. Objectives/Assignment. How to interpret the t-distribution and use a t-distribution table How to construct confidence intervals when n < 30 and is unknown Assignment: pp. 271-273 #1-26.

ByLecture Slides. Elementary Statistics Twelfth Edition and the Triola Statistics Series by Mario F. Triola. Chapter 9 Inferences from Two Samples. 9-1 Review and Preview 9-2 Two Proportions 9-3 Two Means: Independent Samples 9-4 Two Dependent Samples (Matched Pairs)

ByOne Tailed Tests. Here we study the hypothesis test for the mean of a population when the alternative hypothesis is an inequality. Let’s follow an example and then highlight some main points about hypothesis testing.

ByOne Tailed Tests. Here we study the hypothesis test for the mean of a population when the alternative hypothesis is an inequality. Let’s follow an example and then highlight some main points about hypothesis testing.

ByNon-parametric tests. Note: When valid use parametric Commonly used Wilcoxon Chi square etc. Performance comparable to parametric Useful for non-normal data If normalization not possible Note: CI derivation-difficult/impossible. Wilcoxon signed rank test.

ByThe Chi-Square Distribution and Test for Independence. Hypothesis testing between two or more categorical variables. Agenda. Wrapping up the t-test program example Chi-Square and Chi-Square test of independence. Chi-Square Distribution.

ByNEED TO GO BACK TO CLT - LECTURE 4 Hypothesis Testing in the Multiple regression model. Testing that individual coefficients take a specific value such as zero or some other value is done in exactly the same way as with the simple two variable regression model.

ByMore Regression Information. On the previous slide I have an Excel regression output. The example is the pizza sales we saw before. The first thing I look at is the coefficients. See cell b28 has the word coefficient. We take the information below and write the equation as

By8.2 Testing the Difference Between Means (Small, Independent Samples). Statistics Mrs. Spitz Spring 2009. Objectives/Assignment. How to perform a t-test for the difference between two population means, 1 and 2 using small independent samples. Assignment: pp. 384-388 #1-24 all.

ByChapter 9. Correlation and Regression. Correlation. § 9.1. y. 2. x. 2. 4. 6. – 2. – 4. Correlation.

ByQuiz 8. Hypothesis testing Comparing two samples. 1. Given two samples of size 35 with normally distributed data and unknown population SDs which statistical distribution should be used to test sample mean differences?. a) binomial b) Student’s t c) standard normal d) chi-squared.

ByView Critical values PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Critical values PowerPoint presentations. You can view or download Critical values presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.