If the coefficient of correlation is 0.90, then the percentage of the variation in the dependent ...

If the coefficient of correlation is 0.90, then the percentage of the variation in the dependent variable y that is explained by the variation in the independent variable x is:
a. 90
b. 81
c. 95
d. None of these choices.

Q. 2

Given that X is a binomial random variable with very large n, the binomial probability P(X 5) is approximated by the area under a normal curve to the left of
a. 5
b. -5
c. 5.5
d. 4.5

Q. 3

In a simple linear regression problem, r and b0:
a. must be equal to each other.
b. must have the same sign.
c. must have opposite signs.
d. are not related.

Q. 4

Given that X is a binomial random variable with very large n, the binomial probability P(X 5) is approximated by the area under a normal curve to the right of
a. 4.5
b. 5.5
c. 4
d. 6

Q. 5

Which of the following assumptions concerning the probability distribution of the random error term is stated incorrectly?
a. The distribution is normal.
b. The mean of the distribution is 0.
c. The variance of the distribution increases as x increases.
d. The errors are independent from one value of y to the next.

Home Search Q & A Board Gallery Resource Library Blog Dictionary Chat	Quick Links Start a Topic Latest Topics Unanswered Questions Courses Study Tools Browse by Textbook	Social Facebook YouTube Community Stats Who's Online Trending Staff	Help About Us Take the Tour Study Tips Posting Guidelines Terms and Policies Contact Us
Biology Forums - Study Force © 2010-2024 \| Powered by SMF \| SMF © 2015, Simple Machines \| Sitemap Biology-Forums.com is not affiliated with any publisher. Book covers, title and author names appear for reference only.

If the coefficient of correlation is 0.90, then the percentage of the variation in the dependent ...

Related Topics