# Chris Graham

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## Chris's activity

#### Chris Graham commented on Row reducing a matrix and finding its rank and nullity-MA2223 1 year ago

Question has some errors in the variable definitions

#### Chris Graham on Row reducing a matrix and finding its rank and nullity-MA2223 1 year ago

Gave some feedback: Doesn't work

#### Chris Graham commented on Make a plot 1 year, 3 months ago

The marking algorithm used code_result[3]["stdout"], which is now code_result[4]["stdout"]

#### Chris Graham commented on Make a plot with matplotlib 1 year, 3 months ago

The marking algorithm used code_result[3]["stdout"], which is now code_result[4]["stdout"]

#### Chris Graham on Make a plot with matplotlib 1 year, 3 months ago

Saved a checkpoint:

Checkpoint before modifying the custom marking algorithm and pre/postamble, as some of it is now not required

#### Chris Graham commented on Perform an independent two sample t-test 1 year, 8 months ago

Part b) asks for the test statistic, which is used as part of the adaptive marking in part a), so part (a) ends up pending with the

"This feedback is based on your last submitted answer. Submit your changed answer to get updated feedback"message after submitting part b). It caused some confusion when students moved between questions in the exam, as they were presented with the warning that not all questions were submitted.

#### Chris Graham on Perform an independent two sample t-test 1 year, 8 months ago

Gave some feedback: Has some problems

#### Chris Graham commented on Arithmetics of complex numbers III 2 years, 4 months ago

This was a bug in the Numbas compiler that is now fixed.

#### Chris Graham on Arithmetics of complex numbers III 2 years, 4 months ago

Gave some feedback: Ready to use

#### Chris Graham commented on Arithmetics of complex numbers III 2 years, 4 months ago

Correct answers are not marked as correct.