Answer:
Median = 36
Step-by-step explanation:
Median is the middle number of a sequence of a number listed in ascending order or from least to greatest.
In the given dot plot data set is :
31, 34, 34, 35, 37, 38, 38, 39
In this data set two are middle numbers, to find out median add both numbers and then divide it by 2.
Median = (35 + 37)/2
= 72/2 = 36
Median is 36