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Q1. What is mean value of this series 2,3,4
Ans. 
The mean value of the series 2, 3, 4 is 3.
• To find the mean value of a series, add up all the numbers and divide by the total count.

• In this case, (2 + 3 + 4) / 3 = 3.
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Q2. Mean value = 3
Ans. 
The mean value of a set of numbers is the average of those numbers.
• Mean value is calculated by adding up all the numbers in the set and dividing by the total number of values.

• For example, if the numbers in the set are 2, 4, and 6, the mean value would be (2+4+6)/3 = 4.
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Q3. What is standard deviation symbol
Ans. 
Standard deviation symbol is a mathematical symbol used to represent the standard deviation of a set of data.
• The symbol for standard deviation is usually represented by the Greek letter sigma (σ) for a population or s for a sample.

• It is used to measure the amount of variation or dispersion of a set of values.

• For example, if a set of data has a standard deviation of 5, it means that the values are typically 5 units away
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