Answer:
Option B is correct.
The average and median levels of control found in her sample are 4 and 3.5 respectively.
Step-by-step explanation:
The average is given as
Average = (Σx)/N
The average is the sum of variables divided by the number of variables
x = each variable
N = number of variables = 6
Average = (4 + 2 + 5 + 3 + 3 + 7)/6
Average = (24/6) = 4.
The median is described as the number in the middle when the variables are arranged in ascending or descending order.
For variables whose number is odd, the median is just the variable in the middle of the ordered distribution.
For variables whose number is even, the median is just the average of the two variables in the middle of the ordered distribution.
Arranging the levels of control, we have
2, 3, 3, 4, 5, 7 (number of variables is even; 6)
The middle numbers are 3 and 4.
The average of these 2 = (3+4)/2 = 3.5