## Statistics: using t-statistics on the TI-83 Plus

The tutor gives an example of how to use the TI-83 Plus to get results from the t-distribution. Let’s imagine the following situation: Sample size: 25 Sample mean: 14.4 Sample standard deviation: 3.3 Estimate the percent of the population between …

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## Financial math: annuities, part I

Financial math awaits many students.  The tutor introduces annuities. From the point of view of a typical consumer, an annuity is the reverse of a loan.  The consumer becomes the lender, while the institution pays them back, often with monthly …

## Statistics: how to enter a list, then find its mean, standard deviation, and median on the TI-83 Plus

Tutoring high school statistics, some of my students use the TI-83 Plus.  The tutor shows one way to find the mean, median, and standard deviation on it. Of course, to find the mean, median, or standard deviation of a list …

## Math: fractions on the TI-83 Plus

The tutor first encountered the TI-83 Plus back in the 90s.  Tutoring math, some of my students are allowed to use it. The TI-83 Plus is, to my mind, more like a computer than a calculator.  Most of my students …

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