ions. Purple & smooth Purple & shrunken Yellow & smooth Yellow & shrunken Expected Number Total x 9/16 = 88.3125 Total x 3/16 29.4375 Total x 3/16 = 29.4375 Total x 1/16 = 9.8125 Observed Number [Observed - Expected ] 85 31 26 15 CHI SQUARE VALUE 0.124 0.083 0.401 2.742 ===> (add the numbers from the rows above) * expected 3.35 4. Now determine if your chi square value is a good fit with your data. Your degrees of freedom (df) is the number of possible phenotypes minus 1. In your case, 4-1 = 3. Find the number in that row that is closest to your chi square value. Circle that number. 2.37 5. Explain what it means to have a "good fit" or a "poor fit". Does you chi square analysis of real corn data support the hypothesis that the parental generation was PpSs x PpSs?