If for a particular data set, the skewness = -0.2, and the kurtosis equals 2.1, then it can be inferred that:
A) the data is skewed to the right and the distribution is less spread out than a normal distribution.
B) the data is skewed to the right and the distribution is more spread out than a normal distribution.
C) the data is skewed to the left and the distribution is more spread out than a normal distribution.
D) the data is skewed to the left and the distribution is less spread out than a normal distribution.
Q. 2How would we interpret the coefficient of determination R2?
A) Approximately 46 of the time, the dollar value of the loans is determined by these three variables.
B) Approximately 46 of the observations lie within 1 standard deviation of the regression line.
C) Approximately 46 of the variation in the total dollar amount of loans can be explained by the variation in these three variables.
D) Approximately 46 of the total dollar amount of loans is explained by these three variables.
Q. 3If the continuous random variable X is uniformly distributed over the interval 6 to 10, then the height of this distribution, f(x), is:
A) 0.125
B) 0.250
C) 0.500
D) 0.750
Q. 4The maximum distance between an estimator and the true value of a parameter is called the margin of error.
Indicate whether the statement is true or false
Q. 5The classical definition of probability is the limit of the proportion of times that event A occurs in a large number of trials, n.
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Q. 6For a chi-square goodness-of-fit-test, the calculated chi-square value is 7.21. If the table chi-square value is 10.645, what is the appropriate decision for this test?
A) Reject the null hypothesis.
B) Fail to reject the null hypothesis.
C) Accept both the null and the alternative hypothesis.
D) It is impossible to determine anything from the given information.
Q. 7In describing numerical data, the data is usually best described by the mean because it is not affected by outliers.
Indicate whether the statement is true or false
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