Determine which variables to include in final model

Assignment Help Basic Statistics
Reference no: EM13152615

Remember to pay attention to the p-value for the overall F. When removing variables from a regression, it is extremely important to remove them one at a time, since p-values can change dramatically when a variable is removed. Later, we"ll discuss a method called "backward" elimination for determining which variables to include in your final model. What about the coefficients?

Reference no: EM13152615

Questions Cloud

Explain how fed use of its three tools of monetary policy : Explain how the Fed's use of its three tools of monetary policy affect supply and demand in the market for reserves and the equilibrium federal funds interest rate.
What mass,in grams, of sulfur dioxide is needed : sulfur dioxide is an unwelcome result of burning soft coal in power plants. Some of the sulfur dioxide ends up as sulfuric acid ( H2SO4) in acid rain.
Draw a hypothetical biochemical pathway : Suppose that in your lab you occasionally get mice that have some sort of bizarre mutation-bent ears. You determine that the bent-ear trait is recessive. You then find out that someone else in your lab has isolated mice with bent ears as well and ..
What is the price elasticity of demand : The demand for shoes can be expressed as Q = 100 - 10P., where Q is quantity and P is price.Using the midpoint method, what is the price elasticity of demand when the price of shoes goes from $5 to $6?
Determine which variables to include in final model : Later, we"ll discuss a method called "backward" elimination for determining which variables to include in your final model. What about the coefficients?
Market rate of return for type of security : If you are planning on buying 1,000 shares of this stock next year, how much should you expect to pay per share if the market rate of return for this type of security is 9 percent at the time of your purchase?
Philosophy of education : What is your philosophy of education? how can you have just one philosophy if you believe in defferent types?
Explain model of the enzyme substrate complex : In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
What kinds of techniques would each use : What are three approaches you could take to look at gene interactions within a cell? What kinds of techniques would each use?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Multiple linear regression model

Using the data in the Excel file Home Market Value, develop a multiple linear regression model for estimating the market value as a function of both the age and size of the house.

  Determining level of measurement

Ski Resorts of Vermont, Inc. is considering a merger with Gulf Shores, Inc. of Alabama. The board of directors surveyed 50 stockholders concerning their position on the merger.

  Z-score be when comparing the babies

In Texas, 1991, the weights of babies, the mean birth weight for all babies is 3369 grams, with a standard deviation of 581 grams, (454 grams = 1 pound). Looking at a baby that weighed 16.1 lbs at birth: What would his Z-score be when compared to ..

  Computing cramer and lambda using chi-square

Construct a cross tabulation to examine the relationships between the two nominal/ordinal level variables. Assume that you selected a random sample of two hundreds cases and collected data on these cases.

  Testing of regression coefficient

In a multiple regression equation two independent variables are considered, and the sample size is 25. The regression coefficients and the standard errors are as follows.

  Confidence interval for population parameter

The width of a confidence interval will be:

  Determining number of absences has declined

At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.

  Making confidence interval for population proportion

Construct a confidence interval for the population proportion p, given n = 182, x = 135; 95%. Suppose the random variable X has a normal distribution with mean 9.0 and variance 49. The probability that X takes on a value of at least 18 is approxim..

  How to measure same kind of ability who has higher score

ACT scores are normally distributed with mean 18 and standard deviation 6. Assuming that both tests measure the same kind of ability, who has the higher score, and why?

  Using anova for managerial decisions

This includes knowing how to use an ANOVA for managerial decisions. Present a business example where you would use an ANOVA. State the hypothesis verbally and numerically.

  What percentage of household incomes in state is in range

A standard deviation of about $9000. Approximately what percentage of household incomes in this state is between $27,000 to $63,000/year? Show all work as to how this is obtained.

  Significant difference in attitudes for males and females

Based on these results, is there significant difference between attitudes for males and for females? Use two tailed test with alpha = .05.

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