ANSWER
The mean will be the most affected.
EXPLANATION
Given;
Initially, the mean, median and mode is calculated thus;
To calculate the median, we need to re-arrange in ascending order. Hence;
After adding 9;
The new data is;
The new mean is;
The mean will be the most affected.
Option a. 1/4 is the right answer
Step-by-step explanation:
Given expression is:
Here
we know that
a = x
In order to find the number which should be added
comparing with the formula
So, we will add the square of 1/2 which is 1/4
Hence,
Option a. 1/4 is the right answer
Keywords: Expressions, polynomials
Learn more about polynomials at:
#LearnwithBrainly