Answer:
Step-by-step explanation:
From the question we are told that:
Lower quartile [tex]x=45[/tex]
Upper quartile [tex]y=87[/tex]
Generally the equation for Mean is mathematically given by
[tex]\=x=\frac{Upper+Lower}{2}[/tex]
[tex]\=x=\frac{x+y}{2}[/tex]
[tex]\=x=\frac{45+87}{2}[/tex]
[tex]\=x=66[/tex]
Since Median m is half middle of distribution
[tex]m=\frac{Upper+Lower}{2}[/tex]
Therefore
[tex]\=x=m[/tex]
[tex]m=66[/tex]
