Statistic

Statistic and Probability

1. Click on the "New plot" icon on the menu bar.
2. Select Statistical Tools for Type of Plot.

3. Choose Histogram for Plot type.
4. Enter 20 for Histogram Bars.
5. Select Response⇒TOP_DISP. From the plot title we see that the mean is -227 and the standard deviation is 7.86.
6. The probability of the response being larger than -220 is 0.2 (two out of ten samples: 2/10 are larger than -220).
7. The probability of the response being less than -230 is almost 0.4 (four out of ten samples: 4/10 are less than -230).
8. The probability of the response being less than -235 is 0.3 (three out of ten samples: 3/10 are less than -235).