A researcher is interested in how the stress levels of college students change over time. The researcher measures stress from 22 college students during the midterms fall semester and midterms spring semester. The spring semester stress scores are below. 22, 21, 18, 21, 20, 20, 18, 20, 18, 19, 18, 19, 19, 21, 22, 22, 21, 21, 22, 19, 20, 18 Create a frequency table that includes the frequencies, the percentages, the cumulative frequencies, and the cumulative percentages.

What is the percentage of students scoring a 21 on Stress?