the following cumulative frequency polygon shows the hourly wages of a sample of certified welders in the atlanta, georgia, area.
a. How many welders were studied? Number of welders b. What is the class interval? Class interval c. About how many welders earn less than $26 per hour? Number of welders d. About 50% of the welders make less than what amount? Amount e. Fifteen of the welders studied made less than what amount? Amount f. What percent of the welders make less than $14 per hour?
