2021年實行全面的機考，考試時間和考試題量都有一定程度的減少，考試難度也是增加了，那你正在備考2021年CFA考試嗎？那小編給你看看CFA考試題，考試題是沒有發(fā)生變化的！

1.?A utility analyst performed a regression analysis relating monthly energy consumption to average monthly temperature over the last four years. Total variation of the dependent variable was 58.6 and the unexplained variation was 31.3. The coefficient of determination and standard error of the estimate, respectively, for the regression model are closest to

Coefficient of determination Standard error of the estimate

????A 0.4659 0.8075

????B 0.4659 0.8249

????C 0.5341 0.8075

????D 0.5341 0.8249

Answer: B.?The coefficient of determination is explained variation divided by total variation (58.6-31.3)/58.6=0.4659. There are a total of 48 observations in the sample the standard error of the estimate is(31.3/(48-2))1/2=0.8249

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2. A lognormal distribution differs from a normal distribution in that a lognormal distribution:

????A. is skewed to the left

????B. cannot contain negative values

????C. has less complicated confidence intervals

????D. is completely described by two parameters

Answer: B.?The lognormal distribution is bounded on the left by zero, but a normal distribution contains negative values.

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