PSAT 8/9 P2 · 第 19 题

The dot plot represents a data set of the number of bursts for 13 eruptions of a steam vent. If an additional eruption with 11 bursts is added to this data set to create a new data set of 14 eruptions, which of the following measures will be greater for the new data set than for the original data set?

Ⅰ. The median number of bursts

Ⅱ. The mean number of bursts