Question

An environmental organization releases an annual beach report card based on water quality. The 2009 ratings for 13 beaches in a county during wet weather are given below. C B A A+ A+ A A+ B D C D F F (a) Would it be appropriate to display the ratings data using a dotplot? Explain why or why not. Since the rating is a numerical variable, a dotplot would not be appropriate. Since the rating is a numerical variable, a dotplot would be appropriate. Since the rating is a categorical variable, a dotplot would not be appropriate. Since the rating is a categorical variable, a dotplot would be appropriate. (b) Summarize the wet weather ratings by constructing a relative frequency distribution. (Round your answers to three decimal places.) Wet Weather Rating Relative frequency A+ A B C D F

          An environmental organization releases an annual beach report card based on water quality. The 2009 ratings for 13 beaches in a county during wet weather are given below.
C B A A+ A+ A A+ B D C D F F
(a) Would it be appropriate to display the ratings data using a dotplot? Explain why or why not.
Since the rating is a numerical variable, a dotplot would not be appropriate.
Since the rating is a numerical variable, a dotplot would be appropriate.
Since the rating is a categorical variable, a dotplot would not be appropriate.
Since the rating is a categorical variable, a dotplot would be appropriate.
(b) Summarize the wet weather ratings by constructing a relative frequency distribution. (Round your answers to three decimal places.)
Wet Weather Rating Relative frequency
A+
A
B
C
D
F

An environmental organization releases an annual beach report card based on water quality. The 2009 ratings for 13 beaches in a county during wet weather are given below.
C B A A+ A+ A A+ B D C D F F
(a) Would it be appropriate to display the ratings data using a dotplot? Explain why or why not.
Since the rating is a numerical variable, a dotplot would not be appropriate.
Since the rating is a numerical variable, a dotplot would be appropriate.
Since the rating is a categorical variable, a dotplot would not be appropriate.
Since the rating is a categorical variable, a dotplot would be appropriate.
(b) Summarize the wet weather ratings by constructing a relative frequency distribution. (Round your answers to three decimal places.)
Wet Weather Rating Relative frequency
A+
A
B
C
D
F

Added by Kerri Y.

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