Answer:
a) adding up the values and then divide by the number of values.
Step-by-step explanation:
Mean is the most commonly used measure of central tendency. We can find the mean of given data set by adding all the values and then dividing by the number of data set.
[tex]\sf Mean = \dfrac{Sum \ of \ all \ the \ observations}{number \ of \ observations}[/tex]
The mean is calculated by adding all the values in a data set and dividing by the number of values, while the median is the middle value and the mode is the most frequent value.So, option a is the correct answer.
The mean is a measure of central tendency that is calculated by adding up the values and then dividing by the number of values.
This is a widely used method in statistics to find the average score. For example, consider a set of test scores: 15, 22, 21, 18, 36, 15, 25, 15.
To calculate the mean, you would add all these scores together to get a total and then divide by the number of scores, which in this case is 8.
The formula would be mean = (15 + 22 + 21 + 18 + 36 + 15 + 25 + 15) / 8, resulting in a mean of 20.875.
It is important not to confuse the mean with other measures such as the median, which is the middle value in an ordered set of numbers, or the mode, which is the most frequently occurring value in the data set. Each of these measures of central tendency provides different insights into the data set you're analyzing.
The arithmetic mean is most affected by extreme values or outliers in a set, while the median is less affected by them. Teachers and statisticians often prefer the median over the mean when the data set contains extreme values, as it can provide a better representation of the "middle" of the data.So, option a is the correct answer.
