Publications by Hanzhi Ma
Simple Regression
1.When should we use regression instead of ANOVA? When we want to use one or more predictors to predict the outcome instead of comparing different group means, we use regression instead of ANOVA. 2.Please explain the relationship between SStotal, SSregression, and SSerror. SStotal: Sum of Square Total SSregression: Sum of Square Regression SSerror:...
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Document
Hyphothesis, IV, DV, Blocker: We use age as the IV, performance scores as DV, and the task conditions as block The age of a person will have an influence on this person’s motor skills H0: There is no difference in performance scores between different age groups H1: At least one group’s performance score is different from others’ Assumptions N...
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Lab1 ANLYII
Research Question: The research question is “There is a significant difference between the 3 brewing methods in terms of the amount of creme it creates. Hypothesis: H0: there is no difference in terms of the amount of creme among the 3 brewing methods. H1: there is at least 1 brewing method differs than the others in terms of the amount o...
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ANLY 512 Final Project
Final Project Introduction Row Overview This project aimed to collect and analyze data about three individuals’ daily activities, behaviors, and habits. The goal was to help the group members better understand themselves and make informed decisions about their lifestyle choices. Coined in 2007 by two Wired Magazine editors, Gary Wolf, and Kevi...
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Lab 2
Lab2 Introduction Rising global average temperature is associated with widespread changes in weather patterns. Scientific studies indicate that extreme weather events such as heat waves and large storms are likely to become more frequent or more intense with human-induced climate change. Long-term changes in climate can directly or indirectly affe...
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Lab 1
Lab 1 - Group Project Stock Prices Column MSFT Microsoft (MSFT) Texas Instruments Incorporated (TXN) Amazon (AMZN) Intuitive Surgical, Inc.(ISRG) Adjusted Closing Prices Column Adjusted Closing Prices for Microsoft (MSFT), Texas Instruments Incorporated (TXN), Amazon (AMZN) and Intuitive Surgical, Inc. (ISRG) Trading Volume Column ...
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Problem Set #1
Directions During ANLY 512 we will be studying the theory and practice of data visualization. We will be using R and the packages within R to assemble data and construct many different types of visualizations. Before we begin studying data visualizations we need to develop some data wrangling skills. We will use these skills to wrangle our data i...
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