Answer:
Step-by-step explanation:
Given that hikers spent the following amounts of time (in minutes) to complete a nature hike:48, 46, 52, 57, 58, 52, 61, 56.
Mean = sum/no of items = 
In ascending order this becomes
46, 48, 52, 52, 56, 57, 58, 61
Median is average of middle items
=
Here mean is less than median this implies there are more entries above the mean. i.e. skewed not symmetrical. For symmetrical distributions mean and median would be equal
c) If 92 is added to this data entry median becomes 56 but mean becomes
while median increases by 4.75
d) Median is better because it is not affected by outliers i.e. extreme values added to the set