Answer: Meta analysis
Step-by-step explanation:
Meta-analysis is defined the quantitative method through which data and results of several previous studies and research of related subject are considered for assessment in systematic manner. It helps in generation of research body .It is formal and randomized process for research trials.
According to question, Miranda is involved in meta-analysis because she is uniting the data from different studies based on consequences of weapon presence . She is pursuing the process systematically and statistically.