参考答案

（1）相对市场占有率为本企业市场占有率与最大竞争对手市场占有率之比，因此丙公司相对市场占有率=30%÷20%=1.5。因为丙公司产品的相对市场占有率和增长率都较高，因此属于明星产品。
（2）明星代表在高增长的市场中占有高份额。短期需要资本投入超过产生的现金，以便保持它们的市场地位，但是未来会带来高额的回报。市场份额有足够大的开发机会，但高增长率将吸引新来者或竞争者。因此，必须再次大量投入现金以维持企业现有的地位并加以巩固。
Solution:
（1）Relative market share is defined as the quotient of the market share of the company divided by the market share of the biggest competitor. So, the relative market share of Company Bing is 1.5 （30%/20%）. As the relative market share and growth rate of Company Bing is high, the product should be classified as star product
（2）Star products are products which account for large market share in high growth market. In the short term, capital investment should be more than cash inflow to maintain the star products′market position, and in the future, high return can be expected. Although there is large opportunity of potential market share, new joiners or other competitors would join the competition due to the high growth rate. So, more capital should be invested to maintain and reinforce the market position