Answer
See the picture.
Work Step by Step
Total: $9146+1825+611+801+121+99+895=13,498$ homicides.
The relative frequency for "Firearms" is $\frac{9146}{13,498}\approx0.6776$
The relative frequency for "Knives or cutting instruments" is $\frac{1825}{13,498}\approx0.1352$
The relative frequency for "Blunt objects" is $\frac{611}{13,498}\approx0.0453$
The relative frequency for "Personal weapons" is $\frac{801}{13,498}\approx0.0593$
The relative frequency for "Strangulation" is $\frac{121}{13,498}\approx0.0090$
The relative frequency for "Fire" is $\frac{99}{13,498}\approx0.0073$
The relative frequency for "Fire" is $\frac{895}{13,498}\approx0.0663$
