NO.PZ202208220100000510
问题如下:
Based on the output from with Logistic Regression 1, how will the change in the
probability that an ETF will be a winning fund increase if one of the other independent
variable values, except for net_assets, is decreased by one unit, holding
all else constant?
选项:
A.TTe probability will increase, but not as much as with the price-to-earnings
increasing by one unit.
TTe probability will increase more than the price-to-earnings increasing by
one unit.
TTe probability will not increase.
解释:
B is correct. In the previous question, the price-to-earnings variable value and
the coefffcient are both positive. By increasing the variable value incrementally by
one, we are increasing the overall positive value of the series of items in the exp
function. TTerefore, if we are reducing the product of a coefffcient value pair that
is negative, we are increasing the overall value of the series of items in the exp
function.
TTe next step is to look to see how many negative coefffcient and value products
are in the series of items in the exp function, then calculate the coefffcient
value product, and compare them to the coefffcient value product for the
price-to-earnings variable.
Therefore, as the portfolio_bonds variable increases by one unit, it results in
a larger increase in profft than the price-to-earnings variable (0.1113 versus 0.0292), since its product is larger than the price-to-earnings product increase by
one unit.
请问有讲解视频吗?