Questions under regression and correlation

Assignment Help Basic Statistics
Reference no: EM1322328

Answer the following questions under Regression and correlation.

1. When using simple regression analysis, if there is a strong correlation between the independent and dependent variable, then we can conclude that an increase in the value of the independent variable causes an increase in the value of the dependent variable.

a. True
b. False

2. In a simple linear regression model, the coefficient of determination not only indicates the strength of the relationship between independent and dependent variable, but also shows whether the relationship is positive or negative.

a. True
b. False

3. In a simple linear regression analysis, the correlation coefficient (a) and the slope (b) have the same sign.

a. True
b. False

4. The correlation coefficient may assume any value between

a. Always
b. Sometimes
c. Never

5. The estimated simple linear regression equation minimizes the sum of the squared deviations between each value of Y and the line.

a. 0 and 1
b. -infinity and infinity
c. 0 and 8
d. .-1 and 1
e. -1 and 0

Reference no: EM1322328

Questions Cloud

Ethical considerations reflected in the laws : Discuss the ethical considerations reflected in the laws applicable to this case. Determine which sources of law would be most relevant in this case and how management could leverage knowledge of those sources to prevent similar instances in the fu..
Regression equation and percentage of variance : Find the regression equation and percentage of variance and test whether the equation is significant portion of the variance.
Which it makes an immediate emergency landing in a pasture : A ladder 6.10 m long leans against the side of a building. If the ladder is inclined at an angle of 76° to the horizontal, what is the horizontal distance from the bottom of ladder to the building.
Labour law encourage or discourage unionization : Does the labour law encourage or discourage unionization? Do you think teaching assistants should be considered employees? Do you think management's reaction to employee interest in unionization differs if the employer already has a high union densi..
Questions under regression and correlation : The estimated simple linear regression equation minimizes the sum of the squared deviations between each value of Y and the line.
Determine the maximum weight of the bucket : Two objects each have a positive charge. The total charge on both objects is 390 µC. When the objects are placed a distance of 1.20 m apart, each exerts an electrostatic force of 21.3 N on the other. What is the charge on each object? (Round the a..
Find the electric field at the point : Two positive point charges, each 17? C, lie along the x-axis at  x = –0.12m  and x = +0.12m.
What is the magnitude of the external electric field : Drawing on Eratoshthenes' method, if two observers are due north and south of each other and are separated by 400 km, what is circumference of their spherical world if they see the similar star on their meridian at altitudes of 23degrees and 47deg..
Damages-alleging negligence : Without testing for short circuits, which Jordan knows that she should do, she tries to switch on a breaker. Jordan is electrocuted and disabled, but survives to sue Invidious for damages, alleging negligence. What might invidious claim in defence?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd