Probability View
Here is one example of the Statistics capabilities.
In a big city, a reading test was conducted with the entire student population (mean score of 100 points and a standard deviation of 12 points). In a particular school, a sample of 55 students received a mean score of only 96 points.
Is the mean score of the sample significantly lower than the mean score of the whole student population?
Try it yourself...
Instructions
| 1. | Open the tab Statistics. |
| 2. | Choose the Z Test of a Mean as your preferred test from the drop-down list. |
| 3. | Enter the Null Hypothesis , which is the mean of the entire student population. |
| 4. | Select the Alternative Hypothesis option . |
| 5. | In the Sample section, enter , standard deviation , and sample size . |
| 6. | Check the Result section in order to interpret the relevant parameter values for your statistical test. |
| Note: GeoGebra automatically calculates the standard error of the mean (SE), the z-score (Z), and the corresponding probability based on a normal distribution (P). |