Answer:
The last one
Step-by-step explanation:
We know that the mean is 7, what we are trying to identify is which situation correctly describes how to find the mean.
<u>Define</u>
Mean = Sum of values divided by number of data values
<u>Reasoning</u>
For "The middle value of the ordered data set is 7."
The middle value is known as the median not mean therefore this answer is not correct.
For "The value that occurs most often in the set is 7."
The number that occurs the most is known as the mode not the mean therefore this is not the correct answer
For " The difference between the smallest value and the largest value is 7.
"
The difference between the smallest and largest number is known as the range therefore this answer is not correct.
We're left with "The sum of all the data values divided by the number of data values is 7." which does indeed correctly describe how to find the mean.
row is filled by just plugging in the corresponding values of 
and 
into the ODE.
and 
, you have