[填空题]
The histogram below shonlnp jo/+5g*s ws the weights of 40 Honeydew Melons, eauu o.9otkr 44ych measured correct to the neare o.yor4t9ku u4st kg.
1. Write down the modal weight of the melons. kg
2. Find the median weight of the melons.
The lower quartile is 3 $\mathrm{~kg}$ . kg
3. Calculate
(1) the upper quartile; kg
(2) the interquartile range.
