Please help with question 10

Siya found that the total number of Mango Where Da Woman Go smoothies sold over the same 12-week period the previous year before was approximately equal to this year. However, the interquartile range of the weekly number of units sold was significantly greater the previous year. Describe a practical method that Siya can employ to influence the interquartile range of the number of Mango Where Da Woman Go' smoothies sold. Explain how it would influence the interquartile range. AY B I U S Xz x2