Shares of Kelly Services (KELYA) have gained 1.1% over the past four weeks to close the last trading session at $22.21, but there could still be a solid upside left in the stock if short-term price targets of Wall Street analysts are any indication. Going by the price targets, the mean estimate of$28.33 indicates a potential upside of 27.6%.The average comprises three short-term price targets ranging from a low of $27 to a high of$29, with a standard deviation of $1.15. While the lowest estimate indicates ...