« 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 64 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?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

The FDA recognizes 118 routes of administration.

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.

College Students, By Sex and Race-Ethnicity College Students, By Sex and Race-Ethnicity
An OBD-II active test. The PCM opens the EGR valve and then monitors the MAP sensor and/or engine ... An OBD-II active test. The PCM opens the EGR valve and then monitors the MAP sensor and/or engine ...
Using a gauge that measures vacuum in units of inches of water to test the vacuum at the dipstick ... Using a gauge that measures vacuum in units of inches of water to test the vacuum at the dipstick ...
a) Radioimmunosorbent test (RIST); (b) radioallergosorbent test (RAST). a) Radioimmunosorbent test (RIST); (b) radioallergosorbent test (RAST).
Active range of motion (AROM) tests for the shoulder. A, Apley Scratch Test. B and C, Internal ... Active range of motion (AROM) tests for the shoulder. A, Apley Scratch Test. B and C, Internal ...
The Hfr chromosome time-of-entry map is assembled from the recombinant data The Hfr chromosome time-of-entry map is assembled from the recombinant data
Video: Alzheimer's Disease

For a complete list of videos, visit our video library