Heal the Bay is an environmental organization that releases an annual beach report card based on water

Question:

Heal the Bay is an environmental organization that releases an annual beach report card based on water quality ( Heal the Bay Beach Report Card, May 2009). The 2009 ratings for 44 beaches in San Francisco County during wet weather were:
A + C B A A + A + A A + B D C D F F
a. Summarize the wet weather ratings by constructing a relative frequency and a bar chart.
b. The dry weather ratings for these same beaches were:
A B B A + A F A A A A A A B A
Construct a bar chart for the dry weather ratings.
c. Do the bar charts from Parts (a) and (b) support the statement that beach water quality tends to be better in dry weather conditions? Explain.
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