ACROSS: 1. Difference between the upper quartile and the lower quartile in a set of data 2. Difference between the highest score and the lowest Score 3. Quartile that is 25% of data is larger than its value 4. Average DOWN: 5. Middle value 6. Quartile that is 25% of data is smaller than its value 7. These are data points that divide the ranked data into four equal parts