Exhibit 20

question 23

Multiple Choice

Exhibit 20.13.An energy analyst wants to test if U.S.oil production is random over time.The analyst has monthly production values for the two years.The analyst finds 12 months are above the median,12 months are below the median,6 runs are below the median,and 5 runs are above the median. Refer to Exhibit 20.13.For the Wald-Wolfowitz runs test,the value of R is:

• A)5
• B)6
• C)11
• D)12

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Definitions:

Bar Graphs

Charts that represent data with rectangular bars to show comparisons among categories.

Reinforce Themes

Strengthen or emphasize certain central ideas or motifs in communication, writing, or artwork.

Artworks

Visual or creative objects or practices that express imaginative or technical skill.

Measure Area

The process of determining the size of a specific space or surface, often for planning or construction purposes.