Mathematics
Mathematics, 05.07.2020 14:01, walkereddie580

An economist is studying the job market in Denver area neighborhoods. Let x represent the total number of jobs in a given neighborhood, and let y represent the number of entry-level jobs in the same neighborhood. A sample of six Denver neighborhoods gave the following information (units in hundreds of jobs).x 15 32 51 28 50 25y 3 3 7 5 9 3Complete parts (a) through (e), given Σx = 201, Σy = 30, Σx2 = 7759, Σy2 = 182, Σxy = 1163, and r ≈ 0.872.a. Draw a scatter diagram displaying the data. b. Verify the given sums Σx, Σy, Σx2, Σy2, Σxy, and the value of the sample correlation coefficient r. c. Find x, and y. Then find the equation of the least-squares line = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.)d. Graph the least-squares line. Be sure to plot the point (x, y) as a point on the line.

answer
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 19:50, electrofy456
What is the result of the following division?
Answers: 1
image
Mathematics, 21.06.2019 21:00, kaylaamberd
What is the value of m in the equation 1/2 m - 3/4n=16 when n=8
Answers: 1
image
Mathematics, 21.06.2019 22:00, huangjianhe135
`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.
Answers: 3
image
Mathematics, 21.06.2019 23:40, genyjoannerubiera
Put the following steps for calculating net worth in the correct order
Answers: 1
Do you know the correct answer?
An economist is studying the job market in Denver area neighborhoods. Let x represent the total numb...

Questions in other subjects: