This topic contains a solution. Click here to go to the answer

Author Question: Define each of the following statistical terms: a . Descriptive statistics b. Statistical inference ... (Read 132 times)

Caiter2013

  • Hero Member
  • *****
  • Posts: 607
Define each of the following statistical terms: a . Descriptive statistics b. Statistical inference c. Confidence level d. Significance level e. Population f. Sample

Question 2

In simple linear regression, the regression equation is a straight line. In multiple regression, what geometric form is taken by the regression equation when there are two independent variables? When there are three or more independent variables?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

al

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

a . Descriptive statistics is organizing, summarizing, and analyzing data to describe a sample.
b. Statistical inference is the process of making an estimate, prediction, or decision about a population based on sample data.
c. The confidence level is the proportion of times that an estimating procedure will be correct.
d. The significance level is the proportion of times that a conclusion about a population will be wrong.
e. A population is the group of all items of interest to a statistics practitioner.
f. A sample is a set of data drawn from the studied population.

Answer to Question 2

When there are two independent variables, the regression equation can be thought of in terms of a geometric plane. When there are three or more independent variables, the regression equation becomes a mathematical entity called a hyperplane. It is impossible to visually summarize a regression with three or more independent variables because it will be in four or more dimensions.




Caiter2013

  • Member
  • Posts: 607
Reply 2 on: Aug 1, 2018
YES! Correct, THANKS for helping me on my review


mjenn52

  • Member
  • Posts: 351
Reply 3 on: Yesterday
Excellent

 

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

For a complete list of videos, visit our video library