regression

In order to investigate the relationship between insurance companies’ annual cost-income ratios and the percentage of non-executive directors on the board, a sample of 12 medium sized insurance firms was taken and the following sums were calculated from the sample data:

∑x 5 440,

∑y 5 3.75,

∑xy 5 108.25:

where y represents the annual cost-income ratio and x represents the percentage of nonexecutive directors on the board.

(a) Taking the annual cost-income ratio (y) as the dependent variable and the percentage of non-executive directors on the board (x) as the independent variable, calculate the equation of the least-squares regression line.

(b) Using your estimated regression equation in part (a):

(i) Predict the annual cost-income ratio for a firm with a board consisting of ten directors, four of whom are non-executive directors.

(ii) Comment on the likely accuracy of your prediction in part (i).

For a custom-written paper on the above topic, place your order now!

What We Offer
• On-time delivery guarantee
• PhD-level professionals
• Automatic plagiarism check
• 100% money-back guarantee
• 100% Privacy and Confidentiality
• High Quality custom-written papers

Unlike most other websites we deliver what we promise;

  • Our Support Staff are online 24/7
  • Our Writers are available 24/7
  • Most Urgent order is delivered with 6 Hrs
  • 100% Original Assignment Plagiarism report can be sent to you upon request.

GET 15 % DISCOUNT TODAY use the discount code PAPER15 at the order form.

Type of paper Academic level Subject area
Number of pages Paper urgency Cost per page:
 Total: