Q1: Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. Based on the data shown below, calculate the regression line (each value to two decimal places). y = x +

x	y
4	12.78
5	11.85
6	14.52
7	12.79
8	13.26
9	16.33
10	17.2
11	15.17
12	15.64
13	19.31
14	19.68
15	20.05
16	19.92
17	21.09
18	22.76
19	22.13

Q2: Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and Y the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between X and Y. Use your calculator!

x	y
4	47.1
5	44.02
6	39.64
7	36.86
8	33.98
9	33.4
10	28.72
11	27.14
12	25.46
13	21.48
14	18.3

r= .........

Q3: Match each scatterplot shown below with one of the four specified correlations.

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1. 0.51
2. 0.84
3. -0.58
4. -0.09