« 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 65 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?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Digital rectal exam (DRE). The physician’s index finger is inserted into the rectum and pressed agai Digital rectal exam (DRE). The physician’s index finger is inserted into the rectum and pressed agai
Women who are monozygotic twins and have the same genes are more similar in their marital happiness Women who are monozygotic twins and have the same genes are more similar in their marital happiness
Looking carefully at the scan tool data is very helpful in locating the source of a problem. Looking carefully at the scan tool data is very helpful in locating the source of a problem.
A Scatterplot of the Test Scores and Average Grades of 10 Students A Scatterplot of the Test Scores and Average Grades of 10 Students
The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ... The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ...
Drinking Alcohol use by college students Drinking Alcohol use by college students
Video: Neuron structure and function - sensory neurons, association neurons & motor neurons

For a complete list of videos, visit our video library