Median and mode calculation during the exam won’t be more than a few numbers. I wouldn’t worry about how to calculate it on a calculator and just do it during the exam. You have 1 and 1/2 mins per questions. That’s more than plenty to do this stuff in your head.
As for hp 12c calculating median and mode, i don’t beleive you can do that on it. I’ve only recently started learning to use mine but i’m 90% sure you cannot do that. Only the mean and sample standard deviation if i recall correctly.
Why would you need the hp12c to calculate mode and median? The 12c has a sum button that lets you calculate the mean. Just look at the manual its pretty straight forward.
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