*URGENT* *WILL GIVE 100 POINTS*
A researcher hypothesizes that consistently participating in yoga will improve concentration and focus, thereby improving short-term memory. A study was conducted to determine the impact of yoga on short-term memory over time. Ten college-age subjects were randomly assigned to two groups. Group 1 did not participate in yoga. Group 2 completed 30 minutes of yoga prior to the memory exercise each week for 5 weeks. Subjects were given a unique list of 20 terms and their definitions each week for five weeks. They were allowed fifteen minutes to review the terms. They were then tested on the terms 30 minutes later.

Week 1 Week 2 Week 3 Week 4 Week 5
No yoga: 7 9 1 1 13 14
Yoga: 11 14 15 17 17

Data Analysis

1. Create a graph for each set of data or create a single graph that displays both sets of data
2. Calculate the mean, median, and range for each set of data
3. Calculate the standard deviation for each data set

Research Methods

4. Do the results of the study support the hypothesis?
5. Describe the research methods used in the study.
6. What are other factors that may have impacted the results?
7. If the study were replicated, what additional controls could be used to strengthen the study?
8. Explain the importance of operational definitions.