), beta coefficient (? coefficient
) and the Sharp Ratio (Sharp ratio)
) three items to represent. Risk coefficient (risk coefficient
) is a term in the subject of risk management, which refers to the method of expressing the degree of risk with specific numerical values. The most commonly used is Dow fire and explosion index (Dow for short).
Risk coefficient:
Standard deviation, standard deviation is an index to measure the fluctuation degree of fund return. The smaller the standard deviation, the smaller the fluctuation of its net value and the smaller the risk.
Beta coefficient is an index to measure the sensitivity of fund return and relative index return. According to the definition of investment theory, the beta coefficient of the whole market itself is 1. If the fluctuation of the fund's portfolio net value is greater than that of the whole market, the beta coefficient is greater than 1. The greater the beta value, the higher the risk and profit potential of the fund.
Sharp index, sharp index is to measure the extra income of each unit risk. The larger the number, the higher the return of the fund after considering risk factors, and it is a better fund.
Theoretical explanation of risk coefficient;
1, the higher the management index n, the larger the shadow area, and the greater the risk that the operator bears. Therefore, the shadow area p () corresponding to people, that is, the operator's risk probability, can be simply called the risk table corresponding to the risk coefficient shown in Table 3.
2、? The ratio of the risk of this investment to the average social risk is called the risk coefficient. What is the risk coefficient of expressway toll management? Some scholars believe that the risk of highway toll management is less than or equal to the average social risk through the analysis of the profitability and risk of existing toll roads in China? This value can be in the range of 0.9 ~ 1.0.
3. The risk value obtained through the understanding, estimation and evaluation of risk is called risk coefficient. The calculation formula is: risk coefficient = total geological exploration cost of all projects-1 (3) depreciation coefficient (? )
4. If P {R>R design }= 1-? , it is called (1-? ) 100% confidence ensures the required reliability r design. It is called risk coefficient, which is equivalent to the unilateral lower confidence limit required by reliability, that is, RL=R design. Designers are most interested in ensuring this minimum reliability of products.
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