Mean Temperature (C)	Yield (tones/hectare)
4	1.6
8	2.4
10	2.0
9	2.6
11	2.1
6	2.2

1. A farmer wants to determine whether there is a relationship between the mean temperature during the growing season and the size of his wheat crop. He assembles the following data for the last six crops.

1 A) Compute the correlation coefficient and the coefficient of determination.

1. B) What can the farmer conclude about the relationship between the mean temperatures during the growing season and the wheat yield on his farm?

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Temperature (C)	Number of Sales
20	14
21	16
25	11
17	17
22	16
30	10
30	10
23	14
27	11
21	15
17	15
22	16
28	13
28	15

2. An ice-cream vendor records the temperature each day and the number of sales. Use graphing software (Desmos) to make scatter plot to display these data.

2.A) State the equation of the line of best fit for the data. (1 mark)

2. B) Determine and state the correlation coefficient and the coefficient of determination. What do these two values imply about the strength of the relationship between the variables?

2. C) Predict the number of ice-cream sales when the daily temperature is 15C and when it is 37C.