# Basic Statistics & Probability

# Box & Whisker Plots Examples

### Example 1

This plot represents the amount of money Mateo earned the past 18 weeks working at this dad's shop. Create a box and whisker plot of this data. 12|0 represents $120 The median (Q2) is between 136 and 137. It is 136.5. |

### Example 2

Answer the following questions, based on these box plots, on the amount of time boys and girls spend per day on social networking sites. Approximate the girls' IQR and the boys' IQR. a) The girls' lower quartile is about 1.25 hr/day and the upper quartile is about 3.5 hr/day. Girls' IQR = 3.5 – 1.25 = 2.25 hours/day |