To determine which fertilizer is generally more effective, we can compare the average weight of the potatoes for each fertilizer.
For Fertilizer A:
Mean = (27+20+16+18+22+19+23+21+17+19)/10 = 20.2 kg
For Fertilizer B:
Mean = (28+19+18+21+24+20+25+27+29+21)/10 = 22.3 kg
From this calculation, we can see that Fertilizer B had a higher average potato weight than Fertilizer A. Therefore, we would conclude that Fertilizer B is generally more effective.