Stocks Volume Analysis

Should I invest in Apple (AAPL)?
The stock has dropped a good 30% of recent months and is currently around $ 130.00. If Runners who have programs for the analysis of volume and sales projections, I would like your comments please.
Apple recently provided negative guidance on future earnings, but according to the relative strength index is the lowest intermediate, then for a short time horizon, could be a good time to buy. Personally, I would stay out of it but for the moment, too much air space in the Apple and the economy.
Market Technical Analysis – Light Volume Propping Continues As Dollar Spikes…Stocks Neutral