Question

unit 4 test: graphs and describing distributions

1. a well - drawn histogram should have

(a) bars all the same width.
(b) no space between bars (unless a class has no observations)
(c) a clearly marked vertical scale.
(d) all of these.
○ a
○ b
○ c
○ d

Explanation:

A histogram is a graphical representation of data. The bars in a well - drawn histogram should all have the same width to ensure a fair visual comparison of the frequencies in each class. There should be no space between bars (unless a class has no observations) to show the continuous nature of the data distribution. A clearly marked vertical scale (usually representing frequency or relative frequency) is essential for accurately reading the values. Since all of the characteristics (a), (b), and (c) are important for a well - drawn histogram, option (d) is correct.

Answer:

d. All of these.