Term 1 of 207
To compute the necessary sample size for an interval estimate of a population proportion, all
of the following procedures are recommended when p is unknown except
2.576.
using judgment or a best guess.
using .95 as an estimate.
confidence interval.
Term 2 of 207
The standard error of is given by
The one that ignores the sample size completely.
The one that calculates the variance without any adjustments.
The one that only considers the mean of the sample.
The one that has a root square covering the entire thing
Term 3 of 207
What value of Durbin-Watson statistic indicates that no autocorrelation is present?
Two.
N-2.
Alpha = .2
Three
,Term 4 of 207
In regression analysis, the variable that is being predicted is the
dependent variable.
residual.
explanatory variable.
categorical variable.
Term 5 of 207
The mathematical equation relating the independent variable to the expected value of the
dependent variable, E(y)=B0+b1x, is known as the
moving averages.
regression model.
regression equation.
stepwise regression
Term 6 of 207
When constructing a confidence or a prediction interval to quantify the relationship between
two quantitative variables, what distribution do confidence and prediction intervals follow?
Best-subsets regression.
Sample mean.
Confidence interval.
T distribution.
,Term 7 of 207
Which of the following statements is false?
Regression analysis is solely used for predicting future values.
Regression analysis can be interpreted as aprocedure for establishing a cause-and-
effect relationship between variables.
Regression analysis can only be applied to categorical data.
Regression analysis does not require any assumptions about the data.
Term 8 of 207
A variable used to model the effect of categorical independent variables is called a(n)
Dummy Variable
Dependent Variable
Normally Distributed
Sample Statistic
Term 9 of 207
In a regression analysis, an outlier will always increase
Influential observation.
The value of the correlation.
Mean squared error.
Regression equation.
, Term 10 of 207
When using a weighted moving average, if we believe that the recent past is a better predictor
of the future than the distant past, we should
Individual significance.
Give larger weights to recent observations
As the values of x get larger, the ability to predict y becomes less accurate.
Linear trend regression.
Term 11 of 207
What test can be used to determine whether first-order autocorrelation is present?
Residual plot.
Error term
Durbin-Watson test
Vif test
Term 12 of 207
Which of the following does not need to be known in order to compute the p-value?
Autocorrelation.
Three
The level of significance.
The cyclical component
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller codersimon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.00. You're not tied to anything after your purchase.
