33 22 11 8 3 19 Find the least-squares line. (a) What is the slope of the least-squares line? Round your answer to 5 decimal places. -3.23333 solo tasks per number of assistants (b) What is the y-intercept of the least-squares line? Round your answer to 3 decimal places. 28.389 solo tasks (c) Use the least-squares line to predict the number of solo tasks for a building manager who has 4 assistants. What is that prediction? Round your answer to 2 decimal places. 15.46 solo tasks (e) What is the residual of the point (7, 9)? Round your answer to 2 decimal places.
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(c) Find x̄, and ȳ. Then find the equation of the least-squares line ŷ = a + bx. (Round your answers to four decimal places.) (d) Graph the least-squares line. Be sure to plot the point (x̄, ȳ) as a point on the line. (e) Find the value of the coefficient of determination r². What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (Round your answer for r² to four decimal places. Round your answers for the percentages to two decimal places.) (f) If a team had x = 3 fouls over and above the opposing team, what does the least-squares equation forecast for y? (Round your answer to two decimal places.)
Sheryl E.
3(12), For the following set of data {(-1, 0), (0, 2), (1, 4), (2, 5)} a) Find the slope and intercept of the least square regression line b) Compute the R-squared (The coefficient of determination) by: R-squared = SSR / SST = 1 - SSE / SST c) Estimate the value of y for x = 1.9 x y ȳ ŷ (y-ȳ) (y-ŷ) (y-ȳ)² (y-ŷ)²
Jerelyn N.
3. What is the correct regression intercept (a)? (round to three decimal places here) (1 point) A). 3.138 B). 0.332 C). -1.576 D). 1.576 E). -0.332 4. What is the correct regression equation (Y')? (use three decimal places here) (1 point) A). Y' = 0.332X + 1.576 B). Y' = -1.576X - 0.332 C). Y' = 3.105X - 1.576 D). Y' = 1.576X + 0.332 E). X = 1.576Y' + 0.332 5. Imagine a participant performs in a group of twelve (12) observers. Given your regression equation, how many errors should the participant make? (For your final answer, please round to two decimal places) (1 point) A). 5.63 B). 12.27 C). 19.24 D). 35.62 E). -19.24
Sri K.
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