PPT-Sampling Polling, and estimating proportions

Choosing a sample size Sampling methods Stratified sampling cluster sampling Sampling problems Nonresponse bias measurement bias Optimization Exce l s Solver Adverse selection. SPI 6.1.1 Predictions & Conjectures. SPI 6.2.6 Rates & Percents. What is a proportion?. A . proportion. is 2 equivalent ratios.. . Example. : . 6 . = . 3. 20 10. What is a ratio?. A . An introduction. Ratios express . relationships. 1 dozen eggs . $2.50. 2 cups of flour. 1 cake. This expresses the relationship that 1 dozen eggs cost $2.50. . This expresses the relationship that 2 cups of flour are needed to make 1 cake. In this section we will be able to give real life examples of Fractions and Proportions. We will also learn how to solve and evaluate Fractions and Proportions in word problems.. Lesson plan goals. We are constantly using fractions everyday. Most of the time not really even noticing that we are using fractions. Have you ever checked the clock or a watch for the time? Guess what the time is a fraction of a day so any time you use a watch, clock. Proportions. What are proportions?. - If two ratios are equal, they form a proportion. Proportions can be used in geometry when working with similar figures.. What do we mean by similar?. - Similar describes things which have the same shape but are not the same size.. Statistics. What you will learn. Be able to state the null and alternative hypotheses for testing the difference between two population proportions.. Know how to examine your data for violations of conditions that would make inference about the difference between the two population proportions unwise or invalid.. Lesson 5.2: Proportions. Chapter Five: Ratios and Proportions. Lesson 5.2: Proportions. Chapter Five: Ratios and Proportions. Lesson 5.2: Proportions. Chapter Five: Ratios and Proportions. Lesson 5.2: Proportions. surprised when the . polls are wrong?. Professor Patrick Sturgis, University of Southampton. Swedish Statistical Society Annual Conference. 23 March 2017, Lund. What I’ll talk about. Why we shouldn’t be surprised:. Difference Between Proportions. Sometimes we want to see if there is a significant difference between independent groups.. Control group vs. treatment group or placebo group. Men vs. women. Last year vs. this year. Yawn Seed?. Subject. Yawned?. Yes. No. Total. Yes. 10. 4. 14. No. 24. 12. 36. Total. 34. 16. 50. Trial. Number who yawned in yawn seed group. Number who yawned in no yawn seed group. Difference in proportions (yawn. According to the . PMBOK. ®. Guide, . Project Cost Management knowledge area includes the processes involved in planning, estimating, budgeting, financing, funding, managing, and controlling costs to complete the project within the approved budget. Textbook Pages 430-435. Objective. I can solve scale drawing problems using proportions.. Vocabulary. Scale Drawing: . is the same shape but not the same size. A map is a scale drawing. The units are very important.. Original Data. Equated Day . Factors. Holiday Factors. Normalized Data. Initial Seasonal Factors. Seasonally-Adjusted Data:. Initial. Seasonally-Adjusted Data:. Initial. Growth Rate. (Adjustments). Events. Whiteboard Features. ZOOM. Julie Horwath. Touro University California . Electronic Resources Librarian. julie.horwath@tu.edu. POLLING. How to create, launch, and share polls.. IMPORTANT!. You can create up to 25 polls for a single meeting. Chapter 5. Estimating Projects . Estimating. The process of forecasting or approximating the time and cost of completing project deliverables. The task of balancing the expectations of stakeholders and the need for control while the project is...