1. If you were creating a relative-frequency histogram based on some data in a frequency table, what information from the frequency table would you use to draw the bar representing each class of data?

a. the class frequency and the class midpoint

b. the lower class limit and the class frequency

c. the class midpoint and class width

d. the class frequency and the upper class limits

e. the lower class boundary and the class frequency

2. Describe a feature common to all histograms.

a. Each data value is broken into two parts.

b. The bars in the graph are always displayed in descending order of height from left to right.

c. The intervals on the horizontal axis represent equal units of time.

d. The bars in the graph can be made horizontal or vertical.

e. The bars in the graph always touch.

3. What term best describes a histogram with a population distribution in which both sides are more or less the same when the graph is folded vertically down the middle?

a. uniform or rectangular

b. bimodal

c. skewed left

d. skewed right

e. symmetrical

4. What visualization tool identifies the frequency or relative frequency of events or categories in decreasing order of occurence?

a. histogram

b. stem-and-leaf display

c. time-series graph

d. pareto chart

e. relative-frequency histogram

5. What visualization tool displays how a total is dispersed into several categories and is good for qualitative data or any data where percentage of occurence makes sense?

a. bar graph

b. pareto chart

c. stem-and-leaf display

d. relative-frequency histogram

e. circle graph