Latent Fingerprints. Firearms, live ammunition, and spent cartridge casings are often submitted to crime laboratories to be processed for latent fingerprints. B. Maldonado explored the chances of successfully recovering fingerprints in the article, “Study on Developing Latent Fingerprints on Firearm Evidence” (Journal of Forensic Identification, Vol. 62, Issue 5, pp. 425–429). The following table provides a frequency distribution for the type of evidence submitted to crime laboratories over a 2-year period at the Denver Police Department.

Evidence Frequency Firearm 289 Magazine 161 Live Cartridge 2727 Spent Cartridge Casing 259

a. Obtain a relative-frequency distribution.

b. Draw a pie chart.

c. Construct a bar chart.

d. Interpret your results.