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
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