Question

which integer tells the average change in field position for each of the 12 plays? a 9 b -9 c -8 d -108

Explanation:

Step1: Recall the average formula

The average (mean) is calculated as the total sum of values divided by the number of values. For the average change in field position over 12 plays, we need the total change in field position (let's assume the total change is - 108, as the average of - 9 over 12 plays gives a total of \(12\times(-9)=- 108\)) and then divide by the number of plays (12).

Step2: Calculate the average

Using the formula for average \(\text{Average}=\frac{\text{Total Change}}{\text{Number of Plays}}\). If we assume the total change in field position is \(- 108\) (since \(12\times(-9)=-108\)) and the number of plays is 12, then \(\text{Average}=\frac{- 108}{12}=-9\).

Answer:

B. \(-9\)