There is a skill that separates students who get unstuck quickly from students who spend entire weekends staring at the same bug. It has nothing to do with how good a programmer they are. It is about how they ask for help. A good question gets a useful answer in minutes. A bad question gets […]
How to Ask for Help With Coding Homework: A Skill Most Students Never Learn Read More »
A coding homework rubric is the document that tells a grader what to check, how much each part counts, and how to convert a student’s submission into a number. Most students see only the final grade. The rubric itself is what produces it. Knowing how rubrics get designed makes the whole grading process less mysterious
How Coding Homework Rubrics Are Designed: The Dimensions Behind Every Grade Read More »
Reading a CSV file in R takes one line of code: read.csv(“yourfile.csv”). The function loads your data into a data frame, which is the table-like structure R uses for almost every analysis. The harder part is what happens before and after that single line: putting the file in a place R looks at by default,
How to Read CSV Files in R: A Beginner’s Guide with 6 Common Errors Read More »
A summer programming course covers the same material as a fall or spring one, but in roughly half the time. At UC Berkeley, the same CS61A course that runs over 15 weeks in the fall runs over 6 weeks in the summer. The lectures, the homework, the exams, and the project all stay the same.
Should You Take a Programming Course Over the Summer? An Honest Look at the Trade-offs Read More »
The “could not find function” error is one of the most common errors R students hit in their first weeks of using the language. The error message looks intimidating, but the cause is almost always simple. R is telling you that the function you typed is not currently loaded, not currently spelled correctly, or not
Fix Could Not Find Function Error in R: 6 Common Causes Read More »
Coding homework has been part of university computer science for over 70 years. The first programming exercises assigned to students were written by hand on paper at Cambridge University in the early 1950s. Today, students at the same university and thousands of others get their code graded by AI-assisted platforms in seconds. The format has
Coding homework usually counts for 20 to 40 percent of the final grade in a computer science course. That total gets split across 8 to 14 individual assignments, each carrying somewhere between 1.5 and 5 percent of the course mark. Each one looks small on its own. Together they often decide whether a student passes
Every linear regression in R rests on four assumptions about the data. When the assumptions hold, the slope estimates, the p-values, and the confidence intervals are all trustworthy. When the assumptions break, those numbers become unreliable, even if the regression itself runs without an error message. R produces four diagnostic plots that test each of
Regression Assumptions in R: The 4 Diagnostic Plots Explained Read More »
