Answer:
The portfolio beta is 1.13
Explanation:
Portfolio bet is the average beta calculated on the basis of weightage of each investment. The beta of every investment is multiplied with the weightage of each investment in a portfolio. The all the value is added to get the portfolio beta
Portfolio Beta = ( Stock Q beta x Stock Q Weightage) + ( Stock R beta x Stock R Weightage) + ( Stock S beta x Stock S Weightage) + ( Stock T beta x Stock T Weightage)
Portfolio Beta = ( 0.79 x 20% ) + ( 1.23 x 30% ) + ( 1.13 x 35% ) + ( 1.36 x 15% )
Portfolio Beta = 0.158 + 0.369 + 0.396 + 0.204 = 1.127
Portfolio beta is 1.13