The table below lists the height h (in cm), the age a (in years), the gender g (1="Male", 0="Female"), and the weight w (in kg) of some college students. Age Gender Weight 22 53 18 75 20 86 21 61 20 78 We wish to fit a linear function of the form C₁ = to these data. Find the best approximation of this form, using least squares. co= C2 = Height 160 173 184 166 176 C3 = 0 1 1 0 1 f(t) = co+c₁h + c₂a + c3g

Complete Table 3 and find the values of A and B for the straight line that provides the best least-squares fit to the data Table 3 y xy 1 2 3 7 4 9 5 12 Ex = Ey = Σxy Ex² =

The following table shows students’ test scores on the first two tests in an introductory statistics class.  Statistics Test Scores First test, x 89 88 84 52 49 50 87 75 87 41 45 63 Second test, y 85 85 68 57 49 52 82 73 85 35 41 69 Copy Data    Step 1 of 2:  Find an equation of the least-squares regression line. Round your answer to three decimal places, if necessary.       Step 2 of 2:  If a student scored a 6969 on his first test, make a prediction for his score on the second test. Assume the regression equation is appropriate for prediction. Round your answer to two decimal places, if necessary.

The following table gives the gold medal times for every other Summer Olympics for the women's 100 meter freestyle (swimming). Year Time (seconds) 1912 82.2 1924 72.4 1932 66.8 1952 66.8 1960 61.2 1968 60.0 1976 55.65 1984 55.92 1992 54.64 2000 53.8 2008 53.1 Calculate the least squares line. Put the equation in the form of:  ŷ = a + bx.  (Round your answers to three decimal places.) Find the correlation coefficient r. (Round your answer to four decimal places.)r =   Find the estimated gold medal time for 1924. (Use your equation from part (d). Round your answer to two decimal places.) Find the estimated gold medal time for 1992. (Use your equation from part (d). Round your answer to two decimal places.) Use the least squares line to estimate the gold medal time for the 2012 Summer Olympics. (Use your equation from part (d). Round your answer to two decimal places.) ch12#1

The following table shows students' test scores on the first two tests in an introductory chemistry class. First test, x Answer Second test, y 62 85 91 89 49 46 89 84 60 86 Chemistry Test Scores 93 98 54 61 98 82 87 67 74 85 84 75 81 88 Copy Data Step 1 of 2: Find an equation of the least-squares regression line. Round your answer to three decimal places, if necessary.