« previous next »

Author Question: The coefficient of correlation between variables y and x is 0.80 . Calculate and interpret the value ... (Read 46 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
on: Jun 24, 2018
The coefficient of correlation between variables y and x is 0.80 . Calculate and interpret the value of the coefficient of determination.

Question 2

For a given value of x, which will be wider, a 90 confidence interval or a 90 prediction interval? Explain


uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jun 24, 2018
Answer to Question 1

The coefficient of determination is 0.64 (or the coefficient of correlation squared). This means that 64 of the variation in y and is explained by x.

Answer to Question 2

For a given value of s, the prediction interval will always be wider than the confidence interval. The confidence interval is concerned with the mean value of y only; the prediction interval is concerned with all of the possible values of y.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

. Calculate the net electric field at point B . Calculate the net electric field at point B
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
Calculate ΔG° Calculate ΔG°
Table - Correlation Analysis Table - Correlation Analysis
Table - Correlation Analysis Table - Correlation Analysis
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library