Line Plots · Hard problem

Maria recorded $10$ long-jump lengths, in feet: $3\dfrac{1}{2}, 4, 3\dfrac{1}{4}, 4, 3\dfrac{3}{4}, 4\dfrac{1}{2}, 4, 3\dfrac{1}{2}, 3\dfrac{3}{4}, 4\dfrac{1}{4}$. She makes a line plot with marks every $\dfrac{1}{4}$ foot. How many of her jumps are no more than $\dfrac{1}{4}$ foot away from the length that has the most X's?