Part 1
median number
For thanksgiving
media=(20+15)/2=17.5
For new's year
media=(5+10)/2=7.5
Part 2
Find out the IQR
we have that
IQR=Q3-Q1
For thanksgiving
IQR=20-15=5
For new's year
Q1=(5+7.5)/2=6.25
Q3=(7.5+15)/2=11.25
IQR=11.25-6.25=5
Part 3
The New's year holiday show a greater variability in the data set