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Total 132 questions

Total 132 questions

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Consider the following distribution data for a random variable X: What is the mean and variance of X?

Answer : **D**

Which of the following is a false statement concerning the probability density function and the cumulative distribution function of a random variable?

Answer : **D**

Which of the following is consistent with the definition of a Type I error?

Answer : **B**

When the errors in a linear regression show signs of positive autocorrelation, which of the statements below is true?

Answer : **D**

Which of the following can induce a 'multicollinearity' problem in a regression model?

Answer : **C**