Two fertilizers are applied to randomly selected potato plants. After several weeks, the potatoes are weighed. The weights in kilograms are as follows. Which fertilizer is generally more effective?

Fertilizer A: 27, 20, 16, 18, 22, 19, 23, 21, 17, 19
Fertilizer B: 28, 19, 18, 21, 24, 20, 25, 27, 29, 21
Explain.
(1 point)
Responses

Fertilizer A is generally more effective, because the mean and median weights of the potatoes treated with it are higher.
Fertilizer A is generally more effective, because the mean and median weights of the potatoes treated with it are higher.

Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.
Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.

Fertilizers A and B are both ineffective, because there is no difference in the ranges of the weights of the potatoes.
Fertilizers A and B are both ineffective, because there is no difference in the ranges of the weights of the potatoes.

Fertilizers A and B are equally effective, because the ranges of the weights of the potatoes are the same.

1 answer

To determine which fertilizer is generally more effective based on the potato weights provided, we need to calculate the mean and median for each set of data.

Fertilizer A weights: 27, 20, 16, 18, 22, 19, 23, 21, 17, 19

Calculating the mean for Fertilizer A: Mean = (27 + 20 + 16 + 18 + 22 + 19 + 23 + 21 + 17 + 19) / 10
Mean = 21.2 kg

Calculating the median for Fertilizer A: First, sort the values:
16, 17, 18, 19, 19, 20, 21, 22, 23, 27
Median = (19 + 20) / 2 = 19.5 kg


Fertilizer B weights: 28, 19, 18, 21, 24, 20, 25, 27, 29, 21

Calculating the mean for Fertilizer B: Mean = (28 + 19 + 18 + 21 + 24 + 20 + 25 + 27 + 29 + 21) / 10
Mean = 23.2 kg

Calculating the median for Fertilizer B: First, sort the values:
18, 19, 20, 21, 21, 24, 25, 27, 28, 29
Median = (21 + 24) / 2 = 22.5 kg


Summary of Results:

  • Fertilizer A: Mean = 21.2 kg, Median = 19.5 kg
  • Fertilizer B: Mean = 23.2 kg, Median = 22.5 kg

Given that both the mean and the median of the weights of the potatoes treated with Fertilizer B are higher than those for Fertilizer A, we can conclude that:

Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.