Write the Word or Phrase That Best Completes Each Statement

Essay

Write the word or phrase that best completes each statement or answers the question.
-The following data represents the normal monthly precipitation for a certain city in Arkansas. $$\begin{array} { l | c } \text { Month, } x & \begin{array} { c } \text { Normal Monthly } \\\text { Precipitation, inches }\end{array} \\\hline \text { January, } 1 & 3.91 \\\text { February, 2 } & 4.36 \\\text { March, } 3 & 5.31 \\\text { April, } 4 & 6.21 \\\text { May, } 5 & 7.02 \\\text { June, } 6 & 7.84 \\\text { July, } 7 & 8.19 \\\text { August, } 8 & 8.06 \\\text { September, } 9 & 7.41 \\\text { October, } 10 & 6.30 \\\text { November, 11 } & 5.21 \\\text { December, 12 } & 4.28\end{array}$$ Draw a scatter diagram of the data for one period. Find the sinusoidal function of the form y = A sin (ωx - Φ) + B that
fits the data. Draw the sinusoidal function on the scatter diagram. Use a graphing utility to find the sinusoidal
function of best fit. Draw the sinusoidal function of best fit on the scatter diagram.