Median means middle. You must find the middle of this set of data. To do this you must first order the data from least to greatest:
3.44, 5.0, 6.09, 8.74
Now on each "level" remove the largest and the smallest number until you get to the middle number(s)
3.44, 5.0, 6.09, 8.74
5.0, 6.09
Since there isn't exactly one number in the middle you must take the mean (average) of the two numbers left. To do this you must add the remaining numbers, 5.0 and 6.09, together then divide by 2
5.0 + 6.09 = 11.09
11.09 ÷ 2 = 5.545
The mean of this data set is 5.545
Hope this helped!
~Just a girl in love with Shawn Mendes