# Problem 10

The diagram shows the number of students at soccer practice each weekday during last week. After computing the mean and median values, Coach discovers that there were actually $21$ participants on Wednesday. Which of the following statements describes the change in the mean and median after the correction is made? $[asy] unitsize(2mm); defaultpen(fontsize(8bp)); real d = 5; real t = 0.7; real r; int[] num = {20,26,16,22,16}; string[] days = {"Monday","Tuesday","Wednesday","Thursday","Friday"}; for (int i=0; i<30; i=i+2) { draw((i,0)--(i,-5*d),gray); }for (int i=0; i<5; ++i) { r = -1*(i+0.5)*d; fill((0,r-t)--(0,r+t)--(num[i],r+t)--(num[i],r-t)--cycle,gray); label(days[i],(-1,r),W); }for(int i=0; i<32; i=i+4) { label(string(i),(i,1)); }label("Number of students at soccer practice",(14,3.5)); [/asy]$ $\textbf{(A) }$The mean increases by $1$ and the median does not change. $\textbf{(B) }$The mean increases by $1$ and the median increases by $1$. $\textbf{(C) }$The mean increases by $1$ and the median increases by $5$. $\textbf{(D) }$The mean increases by $5$ and the median increases by $1$. $\textbf{(E) }$The mean increases by $5$ and the median increases by $5$.

## Solution 1

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