« 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 80 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?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Talar Tilt Test Talar Tilt Test
Relative rate test, calibrating the molecular clock, and calculating divergence dates. Relative rate test, calibrating the molecular clock, and calculating divergence dates.
Piaget’s Test for Egocentric Perspectives on Children Piaget’s Test for Egocentric Perspectives on Children
Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ... Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ...
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
One Minute Sit-up Test for Abdominal Muscle Strength and Endurance. One Minute Sit-up Test for Abdominal Muscle Strength and Endurance.
Video: Arthritis

For a complete list of videos, visit our video library