Using Gemini notebook to check answers in statistics class

As part of an introduction to MS 150 Statistics I showed the students how to enter a few basic statistical functions into a spreadsheet.


I then used a Gemini notebook (formerly NotebookLM) preloaded with the textbook chapters to check the work. I started with a prompt:

I want to give you some data followed by some statistical questions along with my answers. I want you to check my answers.

The data:
Car speed in mph
21.2
21.2
.
.
.
21.2
20.0

The questions:
Statistic to calculate
Sample size n
Mode
Median
Sample mean x̅

Answers
18
21.2
20
20.3

Note that in the above the data was clipped, the original prompt included all of the data. Gemini/NotebookLM responded with the following analysis:

Gemini notebook correctly discerned that the data set was multi-modal. There is a mode.mult function that can be used to return values in a polymodal data set, but that is not usually covered in the course. 

The takeaway is that Gemini notebook correctly parsed and responded to a multipart prompt. 

Whether students will use Gemini notebook in this fashion when completing assignments is not known and cannot reliably be known. Note that the above is using Gemini notebook (NotebookLM) and not the Gemini app nor, confusingly enough, Gemini study notebook which is a feature in the Gemini app. A video produced in mid-May covered using Gemini app to check results. The difference is that the above answer checking is occurring in the context of the sources in the notebook - which in the above instance was only the chapters of the textbook.

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