Answer:
Option B, 12
Explanation:
As per the data given in the table (as in the attachment), there are three readings for the water amount in medium soil
Reading 1 - 13
Reading 2- 13
Reading 3- 10
Mean of any observation is equal to the sum of value of all observations divided by the total number of observations.
Thus, here the mean would be
[tex]\frac{13+13+10}{3} \\= 12[/tex]
Thus, the correct answer is option B, 12
