Відео

Thank you for your message. I believe I used this file for the Titanic data: michaelgastner.com/data_for_QR/titanic.csv. Please let me know if it works for you.

Thank you for the positive feedback.

You are welcome. I am glad you found it helpful.

Thank you, @Minely182! I am glad to hear that you find the tutorial helpful.

Thank you, @Minely182, for your interest in more tutorial lessons. I truly appreciate your request. While I am not currently working on new tutorials for this series of tutorials, I may create a new series in the future.

I agree, @AnthonyLopez-di5vv! However, in this series of tutorials, I am deliberately keeping things simple for beginners who have not encountered matrices and may, therefore, get confused about the output.

Thank you for reaching out. It is difficult to diagnose the issue without more information about your data and the steps you followed. However, here are a few general suggestions that might help: (1) Double-check the delimiter. Is it a comma? (2) Check for special characters that might trip up R or Excel. (3) Does the file start with a row that is not meant to be interpreted as column names?

@@michaelgastner ​ hey, thanks for the reply! It's not a problem with the file, it's a problem with excel. Sure, I can go to Data > import and then go through all the steps of importing csv file with all the delimiters and such and it will look as it should. But in your video you simply clicked on it and it already formatted it properly. How did you set up excel to do that?

You’re welcome, Arseniy

I appreciate your positive feedback. Thanks for watching!

Great to hear that you find the videos useful.

Thank you for the positive feedback.

Thank you for your comment. I'm sorry to hear that the code didn't work for you. Could you please provide more details on what you tried and what exactly didn't work? Were there any error messages generated by R? This will help me better understand the issue and find a solution for you.

A Google search brings up some tutorials (e.g. www.dataquest.io/blog/r-api-tutorial/, www.r-bloggers.com/2015/11/accessing-apis-from-r-and-a-little-r-programming/ and www.earthdatascience.org/courses/earth-analytics/get-data-using-apis/API-data-access-r/).

Thank you for kind words. I am glad to hear that you find the tutorials useful.

Thank you. I am glad to hear that you enjoy the tutorials.

Thank you for the positive feedback.

Have you moved body_measurements.csv to your project directory? Have you assigned the data frame to a variable named bm? If the error persists, what is the error message?

Our course used this book: www.amazon.com/Stats-Models-Richard-D-Veaux/dp/0321986490.

Glad to hear the video was useful.

Thank you for your positive feedback.

Thank you for the positive feedback.

Thank you for your kind words. I am glad you find the video useful.

Thank you very much for your kind words.

Thank you for your kind comments. I am glad you find the videos useful.

If you want to show the individual points that are summarised by the box plot, you can use stripchart(), see stackoverflow.com/questions/23675735/how-to-add-boxplots-to-scatterplot-with-jitter

I cannot reproduce your problem. I have just tested this minimal working example: ```{r} dfr <- data.frame(random_digits = sample(0:9, 1e7, replace=TRUE)) write.csv(dfr, "very_long.csv") ``` It creates a CSV file with 10 million rows (plus one row for the header). Perhaps your spreadsheet software (Excel?) cannot load all rows, but there is no limitation in R that there cannot be more than 700,000 rows in an exported CSV file.

You can use aggregate() as explained in lesson 20 (ua-cam.com/video/5j8XR0fvRD0/v-deo.html): aggregate(Sepal.Width ~ Species, data = iris, FUN = median)

@@YaleNUSQuantitativeReasoning it helps me a lot. Thank you sir

Glad to hear my video has promoted world peace

Usually, the y-axis label would summarise both data sets (e.g. "GDP") and a legend (e.g. different colours for different countries) would be used, as shown at 3:45.

@@michaelgastner thank you for the reply. I wanted to clarify, if after using points function, is there any way to update the Y axis labels. I am fairly new to R, and was plotting height and weight on Y axis, with age on X axis. So after using the points function for weight, how do i update the y axis labels to show "weight,height". I am doing the legend as well, but not sure on how to show it in the y axis

@@soulwriterqa2363 You can change the y-axis label with the argument ylab in plot(). For more complex layouts, there is also a function axis().

Can you please give more context?

pnorm calcaulates the probability(area) for a selected value

Thank you for the positive feedback!

Hello Professor Gastner, It has been a delightful 12 weeks of QR here in Yale-NUS. Thank you so much for responding to me here, on this last set of videos. I was deeply saddened when I was informed that there would be no more R tutorials, nothing more that we could learn from you for this course. These video tutorials have been unmeasurably useful to not just me, but many of my fellow colleagues here in this course for learning how to code in Rstudio. If I had to learn from anyone for any other statistics and coding courses here in Yale-NUS, it would be a pleasure to once again hear your voice in another set of videos. Once again, thank you so much for all the educational videos Prof, and I hope I'll see you around someday. To everyone else who I know is probably reading this (lol), make sure to hit that like button and subscribe to Yale-NUS Quantitative Reasoning channel, you won't find a better set of resources elsewhere. Well, this has been a fun ride. Peace out, and have a nice day! :)