A researcher wants to test if a weight loss program is effective at helping participants lose weight. The researcher collects the weight of 100 participants before beginning the new program. What should the researcher do next?
1) Analyze the data and compare the weights of the participants before and after the program
2) Start the weight loss program for the participants
3) Collect the weight of 100 more participants before beginning the program
4) Conduct interviews with the participants to gather qualitative data