A stock with a beta of more than one is more volatile than the market. If the market goes up, it tends to go up at a greater magnitude (i.e. market goes up 10%, stock goes up 15%). The higher the beta, the more volatile the stock.
Is a glass of cola a element or a compound or a homogeneous mixture or a heterogeneous mixture? A glass of cola is heterogeneous mixture because the ingredients are physically separate. Just look at the bubbles.
Consider the ingredients in that 20-ounce bottle of cola: Carbonated water, natural and artificial flavors, a little caffeine, and about 17 teaspoons of sugar, which together add up to 250 calories.