What is the mean of a data set?

What is the mean of a data set?

• A. The median
• B. The range
• C. The mean
• D. The mode

Answer: (C)

The mean is the average value of a data set, found by adding all the data points and dividing by how many there are. This single number represents the center of the data in terms of the arithmetic balance. To compute it, sum all observations and divide by the count. For example, data set 2, 5, 7 has a sum of 14 and three values, so the mean is 14/3 ≈ 4.67. This differs from the median (the middle value when the data are ordered), the mode (the most frequent value), and the range (the difference between the largest and smallest values). The mean can be sensitive to outliers or skewed data, which is important to consider when deciding whether it best describes the data.

The mean is the average value of a data set, found by adding all the data points and dividing by how many there are. This single number represents the center of the data in terms of the arithmetic balance. To compute it, sum all observations and divide by the count. For example, data set 2, 5, 7 has a sum of 14 and three values, so the mean is 14/3 ≈ 4.67. This differs from the median (the middle value when the data are ordered), the mode (the most frequent value), and the range (the difference between the largest and smallest values). The mean can be sensitive to outliers or skewed data, which is important to consider when deciding whether it best describes the data.