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Practical help with statistics using R and RStudio
David H.

268 hours tutoring

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Hourly Rate: $40
Response time: 1 hour

About David


Bio

I have a bachelor of science degree in Industrial Engineering from Iowa State University and a Master of Engineering Management degree from Washington University in St. Louis. I have been applying statistical methods to practical problems in manufacturing for about 40 years now. In recent years I have studied the R programming language and the RStudio environment, which I now use almost every day in my work dealing with equipment reliability.

I have been tutoring students on line for about...

I have a bachelor of science degree in Industrial Engineering from Iowa State University and a Master of Engineering Management degree from Washington University in St. Louis. I have been applying statistical methods to practical problems in manufacturing for about 40 years now. In recent years I have studied the R programming language and the RStudio environment, which I now use almost every day in my work dealing with equipment reliability.

I have been tutoring students on line for about two years, from high school students through adult learners. I have worked with students on general statistics and probability, but I emphasize those who are using R in their courses. I have worked with students in a variety of domains: ecology, political science, engineering, computer science, and others. I like to match as closely as possible what the student's instructor is doing, and work with each student's specific assignments rather than present something that i have produced. I do use many online resources that I think provide good explanations of statistics concepts.


Education

Iowa State University
Industrial Engineering
Washington University in St. Louis
Masters
Coursera Data Science Certification
Other

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Approved Subjects

Probability

Probability

As part of my industrial engineering studies I have completed many courses that rely on probability and statistics concepts. We can understand probability as a application of counting outcomes, and we use mathematics to help us do that counting.
R

R

I have completed a series of online courses covering a variety topics using the R language and RStudio integrated development environment. I use these tools almost every day in my work on equipment reliability. I do a lot of data wrangling and survival analysis. I tutor on regression and all the topics typically covered by introductory statistics courses.
Statistics

Statistics

I have completed courses in a variety of statistics topics as part of my engineering education and now in my tutoring experience. In particular I have studied linear regression, but also logistic regression, classification and regression trees, and more recently machine learning methods. In my work I use survival analysis and some related techniques that originated in medical statistics to address equipment reliability issues.

Examples of Expertise


David has provided examples of their subject expertise by answering 6 questions submitted by students on Wyzant’s Ask an Expert.

David H.'s Photo

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Response time: 1 hour

Ratings and Reviews


Rating

4.9 (89 ratings)
5 star
(84)
4 star
(1)
3 star
(2)
2 star
(0)
1 star
(2)

Reviews

Experienced and patient tutor

David has been teaching me R Studio and web scraping basics. I really appreciate his patience with me as a beginner!! He goes above and beyond each lesson by researching information needed for the lesson beforehand and then explaining it thoroughly during the lesson.

Caroline, 2 lessons with David
Tutor responded:

Thank you for that feedback, Caroline. I have been enjoying working with you on these interesting topics.

The best

David was super easy and nice in the way he approached the assignment, he was prepared as soon as I got online and will be using him throughout the semester. Highly recommend. Made r studio look easy and made me feel like I can do it as well.

Tyler, 3 lessons with David

Ecology Rstudio

David knows exactly whats he’s doing. I was so impressed with his knowledge, this guy is really smart! I recommend him 100%!

Sarah, 2 lessons with David

He is a knowledgeable and patient tutor.

I learned several new methods in R & R Studio. I love the fact that Mr. David was willing to make sure, I understood the tasks in their entirety. I would refer him to all family or friends.

Sharonda, 2 lessons with David

Quick and knowledgeable! He gets right to the point

David's background allowed him to look at my code and understand where my mistakes were and what I needed to do to the correct them. He was willing to work overtime to ensure I received a passing grade on my assignment!

Rabia, 5 lessons with David

Knowledgeable and patient tutor

David helped me with my R studio assignment. I have no prior knowledge of R and David was very patient. I commend him for his patience. He took his time to explain how everything works with Rstudio

Carlos, 2 lessons with David

Knowledgeable and Patient Tutor

David helped me work through a project in R with short notice and in little time. He was very knowledgeable and patient with me, a person who has never used R outside case projects.

Erica, 1 lesson with David

Great Tutor!!

He was super patient and walked me over code trail and explanation of graphic very patiently. We specifically went over quadratic effects and graphing in ggplot

Ashita, 1 lesson with David

KNOWLEDGEABLE AND PATIENT TUTOR

Mary sorted out whether she should be using a notebook file (.Rmd) or script (.R) file. I settled on a notebook, so we made a new note book file and pasted some code into a code chunk. We saw how the output appeared in the editor. Then I created the preview of the notebook, and finally I used the notebook file to knit a Word document."

Mary A., 4 lessons with David

Organized, proactive, patient, and knowledgable

David helped me review and learn some strategies for doing correlation in R. He prepared in advance by sending me a dataset. He was patient during the lesson in making sure I was able to download it (I wasn't able to before the lesson, so we troubleshooted it during the lesson). He knows his way around R - including sharing resources that I didn't know about before the lesson. He also mentioned learning more on his own - showing he's a lifelong learner. The lesson was well organized, practical, and informative. Thank you David!

Meredith, 1 lesson with David
Hourly Rate: $40
Response time: 1 hour
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