2021年實(shí)行全面的機(jī)考，考試時(shí)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
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.
機(jī)上考試是比較難的，也是比較浪費(fèi)時(shí)間的，考生需要的是加強(qiáng)機(jī)考的練習(xí)！
