If the Durbin-Watson statistic has a value close to 0, which assumption is violated? a) Normality...
If the Durbin-Watson statistic has a value close to 0, which assumption is violated?
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a) Normality of the errors.
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b) Independence of errors.
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c) Homoscedasticity.
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d) None of the above.
Homework Answers
Ans:
Option b is correct.
Independence of errors.
if the Durbin-Watson statistic takes a value near 0 then the regression model probably violates the regression assumption of independence of errors.
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We studied a characteristic of iron. Under the normality assumption of its distribution and using its...
We studied a characteristic of iron. Under the normality
assumption of its distribution
and using its sample mean and standard deviation, we computed the
following confidence
interval [2271:7688; 2308:2312]. This interval is a confidence
interval for the mean
of that characteristic at a level of confidence of 90%. We are told
the sample size is 16
and the sample mean is x = 2290. What is the value of the sample
standard deviation s?
We studied a characteristic of iron....
We studied a characteristic of iron. Under the normality assumption of its distribution and using its...
We studied a characteristic of iron. Under the normality assumption of its distribution and using its sample mean and standard deviation, we computed the following confidence interval [2271.7688,2308.2312]. This interval is a confidence interval for the mean of that characteristic at a level of confidence of 90%. We are told the the sample size is 16 and the sample mean is x= 2290. What is the value of the sample standard deviations?A. 44.33 B. 41.6 C. 83.2 D. 54.38 E....
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assumption of its distribution
and using its sample mean and standard deviation, we computed the
following confidence
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interval for the mean
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