To solve this problem you must apply the proccedure shown below:
1- By definition, the formula for calculate the interquartile range is
Interquartile range=Q3-Q1
Where Q1 is the lower quartile and Q3 is the upper quartile.
2-Keeping this on mind, you have:
Interquartile range=Q3-Q1
Q3=245
Q1=201
Interquartile range=245-201
Interquartile range=44
Therefore, the answer is: 44
