« previous next »

Author Question: The data on grades (A, B, C, and D) scored by all students in a test is an example of a. ... (Read 75 times)

oliviahorn72

  • Hero Member
  • *****
  • Posts: 579
on: Jun 24, 2018
The data on grades (A, B, C, and D) scored by all students in a test is an example of
 a. quantitative data.
  b. sample data.
  c. categorical data.
  d. analytical data.

Question 2

Among the results of a multiple regression analysis are the following sum-of-squares terms: SST, SSR, and SSE. What does each term represent, and how do the terms contribute to our understanding of the relationship between y and the set of independent variables.


cegalasso

  • Sr. Member
  • ****
  • Posts: 295
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

SST is the total variation in the y values, SSR is the variation in the y values that is explained by the regression, and SSE is the variation in the y values that is not explained by the regression. The coefficient of multiple determination is equal to 1 - (SSE/SST), or SSR/SST. If SSE is small compared to SST, SSR will be large compared to SST, and the multiple regression equation will explain a large portion of the variation in y. Recall that SST = SSR + SSE.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Energy budget for a temperate deciduous forest (data from Gosz et al. 1978). Energy budget for a temperate deciduous forest (data from Gosz et al. 1978).
Talar Tilt Test Talar Tilt Test
Audiometry. The child in this photograph is undergoing a hearing test with an audiologist. Audiometry. The child in this photograph is undergoing a hearing test with an audiologist.
Urease Test Urease Test
2006 Data:Top 25 Substances Involved in Human Exposures 2006 Data:Top 25 Substances Involved in Human Exposures
Under what conditions can the transition to middle school be associated with declines in grades and ... Under what conditions can the transition to middle school be associated with declines in grades and ...
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library