1. Use the given minimum and maximum data entries, and the number of classes, to find the class width, the lower class limits, and the upper class limits.

minimum=10, maximum=56, 6classes

The class width is___________.

2. Use the following data, which represent the English placement test scores of a sample of 30 students, to construct a frequency distribution with a first class of 472492.

533	523	478	541	582
487	501	558	495	482
551	565	520	541	514
570	479	502	474	541
570	550	589	579	491
510	531	482	523	562

Placement Test Scores	Number of Students
472492	?

493513

?

514534

?

535555

?

556576

?

577597

?

3. The following data represent the number of people in a particular state aged 18to67 with a high school education.

Age	Number (thousands)
1827 2837 3847 4857 5867	146 163 203 160 190

(a) What is the number of classes? ___________

(b) What are the class limits for the first class?______________

Lower Class Limit =___________

Upper Class Limit = ______________

(c) What is the class width? _____________