The torque, T Nm , required to rotate shafts of different diameters,

D mm, on a machine has been tested and recorded as below.

D (mm) 6 10 14 18 21 25

T (mm) 5.5 7 9.5 12.5 13.5 16.5

a) Plot a scatter diagram of the results with diameter of the machine as the independent variable.

b)Use the method of least squares to determine the linear regression equation that relates the torque to the diameter.

c) Estimate the value of torque required when the diameter is 16 mm.

d) Calculate the coefficient of correlation between these variables and comment on your prediction obtained in (c)

Found something interesting ?

• On-time delivery guarantee
• PhD-level professional writers
• Free Plagiarism Report

• 100% money-back guarantee
• Absolute Privacy & Confidentiality
• High Quality custom-written papers

Related Model Questions

Feel free to peruse our college and university model questions. If any our our assignment tasks interests you, click to place your order. Every paper is written by our professional essay writers from scratch to avoid plagiarism. We guarantee highest quality of work besides delivering your paper on time.

Grab your Discount!

25% Coupon Code: SAVE25
get 25% !!