Patty's Parasols recorded the monthly rainfall and their umbrella sales for an entire year. The following table shows the inches of rainfall and the number of umbrellas the store sold each month. The relationship between the inches of rainfall and umbrella sales can be modeled using a linear function. Apr May Jun. Jul. Aug Sept Oct Nov Dec Month Jan. Feb. Mar. Rainfall (in.) 2.5 3.1 4.0 4.3 3.6 2.4 1.2 0.6 1.5 1.4 1.1 2.6 Umbrella sales 132 140 162 170 156 103 98 87 84 78 110 125 (a) Using technology, determine the correlation coefficient for the data to the nearest hundredth. Explain the steps you used. (b) What does the correlation coefficient for the data indicate about the direction and strength of the linear association between the monthly rainf all and the number of umbrellas sold? Answer

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Patty's Parasols recorded the monthly rainfall and their umbrella sales for an entire year. The following table
shows the inches of rainfall and the number of umbrellas the store sold each month. The relationship
between the inches of rainfall and umbrella sales can be modeled using a linear function.
Apr
Jan. Feb. Mar.
May Jun. Jul.
Aug Sept Oct Nov Dec
Month
Rainfall (in.)
2.5
3.1
4.0
4.3 3.6
2.4 1.2
0.6
1.5
1.4
1.1
2.6
Umbrella sales 132
140
162 170
156 103
98
87
84
78
110
125
(a) Using technology, determine the correlation coefficient for the data to the nearest hundredth. Explain
the steps you used.
(b) What does the correlation coefficient for the data indicate about the direction and strength of the
linear association between the monthly rainf all and the number of umbrellas sold?
Answer.
Transcribed Image Text:Patty's Parasols recorded the monthly rainfall and their umbrella sales for an entire year. The following table shows the inches of rainfall and the number of umbrellas the store sold each month. The relationship between the inches of rainfall and umbrella sales can be modeled using a linear function. Apr Jan. Feb. Mar. May Jun. Jul. Aug Sept Oct Nov Dec Month Rainfall (in.) 2.5 3.1 4.0 4.3 3.6 2.4 1.2 0.6 1.5 1.4 1.1 2.6 Umbrella sales 132 140 162 170 156 103 98 87 84 78 110 125 (a) Using technology, determine the correlation coefficient for the data to the nearest hundredth. Explain the steps you used. (b) What does the correlation coefficient for the data indicate about the direction and strength of the linear association between the monthly rainf all and the number of umbrellas sold? Answer.
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