ckoch786
commented
10 years ago I determined that the problem was caused by me prematurely closing a graph that was later to be updated. The issue was resolved by leaving graphs open for the entire module.
ncarchedi
I am posting this issue on behalf of Cory, who emailed me directly:
"Hi,
Upon answering a question I received the following error:
""" Now that you know what the range measures, take a look back at our dot plot. Using the R-command 'range(cars$price)', determine the exact values for the minimum and maximum of the data set, respectively.
ANSWER: range(cars$price) [1] 7.4 61.9
That's a job well done!
PROGRESS: << (X) (X) (X) ( ) ( ) ( ) ( ) ( ) ( ) ( ) >> (34% Complete)
The first number given is the minimum and the second number given is the maximum. To represent these numbers visually, I've drawn 2 lines on the dot plot. As you can see, the red vertical line on the far left illustrates where the minimum value lies. The red vertical line on the far right illustrates where the maximum value lies. The range of the data is defined as the distance between these two red lines. An error was detected. Please notify the administator. """
I am running in Fedora, and installed swirl as per the instructions on this site: http://ncarchedi.github.io/swirl/students.html
-Thanks"