The KSW computer science aptitude test was given to 50 students. The following frequency distribution resulted from their scores.
KSW Test Score 0-4 4-8 8-12 12-16 16-20 20-24 24-28
Frequency 4 8 8 20 6 3 1
(a) What are the class boundaries for the class with the largest frequency?
(lower boundary)
(upper boundary)
(b) Give all the class midpoints associated with this frequency distribution. (Enter your answers from smallest to largest.)
(smallest midpoint)
(largest midpoint)
(c) What is the class width?
(d) Give the relative frequencies for the classes. (Give your answers correct to 2 decimal places.)
(e) Draw a relative frequency histogram of the test scores. (Do this on paper. Your instructor may ask you to turn in this work.)