Median is the middle data in the list of the given numbers. In the given data set the median gets decreased by the presence of the outlier. Thus, option C is correct.
<h3>What is an outlier?</h3>
An outlier is a data that varies significantly from the other data set, due to some error or measuring variability.
The median of the data without outlier is calculated as:
First, data is arranged in the ascending order: 105, 108, 109, 113, 118, 121, 124
Median = ![\rm \dfrac{7 + 1 ^{th}}{2} term](https://tex.z-dn.net/?f=%5Crm%20%5Cdfrac%7B7%20%2B%201%20%5E%7Bth%7D%7D%7B2%7D%20term)
= 4th term
= 113
The median of the data with outlier is calculated as:
First, data is arranged in the ascending order: 61, 105, 108, 109, 113, 118, 121, 124
Median = ![\rm \dfrac{(\dfrac{8}{2})^{th} + (\dfrac{8}{2} + 1)^{th}} {2}](https://tex.z-dn.net/?f=%5Crm%20%5Cdfrac%7B%28%5Cdfrac%7B8%7D%7B2%7D%29%5E%7Bth%7D%20%20%2B%20%28%5Cdfrac%7B8%7D%7B2%7D%20%2B%201%29%5E%7Bth%7D%7D%20%7B2%7D)
= (109 + 113) ÷ 2
= 111
Therefore, the outlier decreased the median.
Learn more about median here:
brainly.com/question/4541254
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