Donnie wants to know whether attractive waiters make more tips.He has a group of people rate the attractiveness of five different waiters,and he gets the waiters to tell him how much money they make in tips every night for a month.What type of research design has Donnie used

A)  quasi-experimental design 
B)  correlational design 
C)  experimental design 
D)  case study design

Quasi-Experimental Design

A research strategy that attempts to estimate the causal impact of an intervention without random assignment to treatment or control groups.

Correlational Design

A research method that examines the relationships between variables to identify patterns and predict outcomes without implying causation.

Attractive Waiters

The concept that physically appealing servers may influence customers' dining experiences and perceptions of the service quality.