# Anova designs

Xem 1-6 trên 6 kết quả Anova designs
• ### Bài giảng Kiểu hoàn toàn ngẫu nhiên (Complete randomized design, CRD)

Bài giảng Kiểu hoàn toàn ngẫu nhiên trình bày những nội dung về sơ đồ bố trí thí nghiệm, tính bảng anova, năng suất lúa, đánh giá kết quả. Mời các bạn cùng tham khảo để nắm bắt được những nội dung chi tiết.

• ### Effects of wire-EDM machining variables on surface roughness of newly developed DC 53 die steel: Design of experiments and regression model

(BQ) This paper presents an investigation of the effects of machining variables on the surface roughness of wire-EDMed DC53 die steel. In this study, the machining variables investigated were pulse-peak current, pulse-on time, pulse-off time, and wire tension. Analysis of variance (ANOVA) technique was used to find out the variables affecting the surface roughness. Assumptions of ANOVA were discussed and carefully examined using analysis of residuals. Quantitative testing methods on residual analysis were used in place of the typical qualitative testing techniques.

• ### Effect Sizes for Research

Emphasis on effect sizes is a rapidly rising tide as over 20 journals in various fields of research now require that authors of research reports provide estimates of effect size. For certain kinds of applied research it is no longer considered acceptable only to report that results were statistically significant. Statistically significant results indicate that a researcher has discovered evidence of a real difference between parameters or a real association between variables, but it is one of unknown size.

• ### Applied Multiple Regression

This book had its origin over 30 years ago, when it became apparent to Jack Cohen that there were relationships between multiple regression and correlation (MRC) on the one hand and the analysis of variance (ANOVA) on the other which were undreamed of (or at least did not appear) in the standard textbooks with which he was familiar. On the contrary, the texts of the era treated MRC and ANOVA as wholly distinct systems of data analysis intended for types of research that differed fundamentally in design, goals, and types of variables.

• ### Lecture Communication research: Asking questions, finding answers (2/e): Chapter 11 - Joann Keyton

Chapter 11- Testing for differences. After reading this chapter, you should be able to: Explain the difference between descriptive and inferential statistics, use the four analytical steps to design and evaluate research designs and statistical findings, develop a hypothesis or research question and select the appropriate statistical test of difference (chi-square, t-test, ANOVA),...