Question:
The mean of number 2, 4, 6, 8 is ____.
The mean of number 2, 4, 6, 8 is ____.
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For a set of numbers in a perfect arithmetic progression (like 2, 4, 6, 8), the mean is always exactly in the middle of the two center terms. The middle of 4 and 6 is 5.
Updated On: May 19, 2026
- 4
- 5
- 6
- 8
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
The arithmetic mean (or average) is a measure of central tendency calculated by dividing the sum of all values in a data set by the total number of values.
Step 2: Key Formula or Approach:
\[ \text{Mean} (\bar{x}) = \frac{\sum x_i}{n} \] where \( \sum x_i \) is the sum of observations and \( n \) is the number of observations.
Step 3: Detailed Explanation:
1. Sum of the numbers: \( 2 + 4 + 6 + 8 = 20 \). 2. Total count of numbers (\( n \)): 4. 3. Calculation: \[ \text{Mean} = \frac{20}{4} = 5 \]
Step 4: Final Answer:
The mean of the numbers is 5.
The arithmetic mean (or average) is a measure of central tendency calculated by dividing the sum of all values in a data set by the total number of values.
Step 2: Key Formula or Approach:
\[ \text{Mean} (\bar{x}) = \frac{\sum x_i}{n} \] where \( \sum x_i \) is the sum of observations and \( n \) is the number of observations.
Step 3: Detailed Explanation:
1. Sum of the numbers: \( 2 + 4 + 6 + 8 = 20 \). 2. Total count of numbers (\( n \)): 4. 3. Calculation: \[ \text{Mean} = \frac{20}{4} = 5 \]
Step 4: Final Answer:
The mean of the numbers is 5.
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