correlations and regression

/in /by

Contents hide
1 Height & Weight: Erroneous Data
1.1 Save your time - order a paper!
1.1.1 Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount! Use Discount Code “Newclient” for a 15% Discount!

Height & Weight: Erroneous Data

As we discussed in chapter 10, sometimes an outlier can make or break a correlation. Data from 11 people regarding height and weight is given in the table below.

x = height in inches

Save your time - order a paper!

Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines

Order Paper Now

y = weight inpounds

60

120

72

200

64

130

71

205

68

180

69

180

69

193

70

195

62

115

62

140

5.5

160

Question 3:

Part A

  • Use software to determine the regression equation for predicting weight from height, using α = 0.05.
  • What is the regression equation? Make sure you show your work and/or copy and paste your output into the body of your post.
  • State the software you used to produce the regression equation.
  • Clearly identify the values for the slope and the y-intercept.
  • What is the expected weight for a person who is 62 inches tall?

Part B

  • Use software to calculate the regression equation for predicting weight from height, excluding the last data point corresponding to a height of 5.5 inches (as the entry of 5.5 inches seems to be an error),using α = 0.05.
  • What is the regression equation without the last data point? Make sure you show your work and/or copy and paste your output into the body of your post.
  • Clearly identify the values for the slope and the y-intercept.
  • Using the regression equation with the last data point excluded, what is the expected weight for a person who is 62 inches tall?
  • Compare your results to those obtained in part A. What can you say about how excluding the outlier affected your results?

 

Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount!
Use Discount Code “Newclient” for a 15% Discount!

NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.

The post correlations and regression appeared first on Custom Nursing Help.