Stats Calculation Resources

We are using Classpad, Geogebra and Stapplet in regular Statistics (not AP) on homework and tests so you don't need a graphing calculator to complete assignments. If you have a TI-84 and would like to learn how to use it visit my TI-84 How To's page under AP Stats.

Binomial Distribution Geogebra Applet
Normal Distribution
- Calculate Inverse z for a given Confidence level (put in the area to the left).
Confidence Intervals (One Sample)
One-Sample Z Interval for a Proportion
One-Sample Z Interval for a Mean
One-Sample t Interval for a Mean
- Calculate Inverse t for a given Confidence level (put in the area to the left).
- Calculate Inverse z for a given Confidence level (put in the area to the left).

Hypothesis Tests for Means when the mean is known (1-Sample Z Test for a Mean)

Hypotheses Tests for Means when the mean is unknown (1-Sample T Test for a mean)
- If you have the stats for the sample you can use the Geogebra applet above, just choose T Test of a Mean. If you don't have the standard deviation for the sample, you can just calculate it using one variable statistics. (see above)
- If you just want to enter a list of data then Stapplet is easier: 1-sample t-test from stapplet
  - You'll see One Quantitative Variable, Single Group. Name the variable
  - Select an input: Either "Raw data" or "Mean and standard deviation"
  - Input in the data or stats depending on your selection then click on "Begin Analysis"
  - Perform Inference: Select "1-sample t test"
    - Select the correct form of the alternative hypothesis: either >, <, or not equal to
    - Input the hypothesized mean and click on "Perform inference".
    - Output shows the t statistic, the p-value and df, the degrees of freedom.
Hypothesis Tests for the Difference of means (2-Sample T Test for the difference of means)