where [r.sub.i,t] - rate of return of particular stock i for a period from t-1 to t, [[alpha].sub.i] - constant of regression model, [[beta].sub.i] - regression coefficient or beta coefficient
of the stock i, [r.sub.w,t] - rate of return of world market portfolio for the period from t-1 to t, [[mu].sub.i,t] - regression residual, n - number of stocks in the sample, T - periods in days, weeks, months.
from the stratified approach are identical to those from the augmented product term approach.
We observed approximately 40% lower risk of MetS at the highest quantile of OBS compared to reference quantile (lowest quantile) among study participants by beta coefficient
adjusted by area, sex, age, and BMI.
The beta coefficient
values were: Dedication ([beta]= -.202), satisfaction with life ([beta]= -.127), openness to experience ([beta]= -.124), growth ([beta]= .204), nutrition ([beta]= -.201), responsibility for one's health ([beta]= .221) and absorption ([beta]= .359).
The beta coefficients
reported in all columns suggest that variations in the timing of agricultural transition has a much larger economic effect than all other indicators of early development, and hence is much more powerful in explaining the variation in technology adoption levels in 1500 AD across countries.
The second most important set of variables are those that capture changes in employment status; aside from initial per capita income the single largest Beta coefficient
is on the number of employed male household members.
The probability value of Hausman Test is less than 0.05 which shows that Fixed Effect model is accepted showing that logfear is significant at 5% level of significance with negative values of beta coefficients
. Logroa is significant at 1%.
A comparison between the two levels of fatness (Table 3 versus Table 4) demonstrates that for either adiposity indicator the associations with HOMA-IR were stronger among the high-fatness students (beta coefficients
0.43-0.52) than among the lower-fatness students (0.30-0.37).
In the CAPM, individual systematic risk related to a company is expressed through a so-called beta coefficient
, a measure of risk relative to a peer group (Vinturella and Erickson, 2004).
Are replaced previous values in CAPM equation, for estimating the required profit rate of concerned assets: [k.sub.e] =[R.sub.f] +[beta]xR[P.sub.M] From equation one can see that the estimating of [k.sub.e] value by the CAPM method starts from risk-free interest rate, [R.sub.f], to which are added a risk premium equal to the risk premium on market, R[P.sub.M], increased or minimize so as to reflect the specific risk of those assets according to its beta coefficient
All beta coefficients
are statistically significant at the 5 per cent level.
Finally, it may be useful to investigate the presence of volatility clustering in the beta coefficients
of diversified stock portfolios.