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Calculate the mean of the following data: 5, 10, 15, 20.

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Question: Calculate the mean of the following data: 5, 10, 15, 20.

Options:

  1. 10
  2. 12.5
  3. 15
  4. 17.5

Correct Answer: 12.5

Solution: 

Mean = (5 + 10 + 15 + 20) / 4 = 50 / 4 = 12.5.

Calculate the mean of the following data: 5, 10, 15, 20.

Practice Questions

Q1
Calculate the mean of the following data: 5, 10, 15, 20.
  1. 10
  2. 12.5
  3. 15
  4. 17.5

Questions & Step-by-Step Solutions

Calculate the mean of the following data: 5, 10, 15, 20.
  • Step 1: Write down the numbers you have: 5, 10, 15, 20.
  • Step 2: Add all the numbers together: 5 + 10 + 15 + 20.
  • Step 3: Calculate the sum: 5 + 10 = 15, then 15 + 15 = 30, and finally 30 + 20 = 50.
  • Step 4: Count how many numbers there are: There are 4 numbers.
  • Step 5: Divide the total sum by the number of numbers: 50 divided by 4.
  • Step 6: Calculate the division: 50 / 4 = 12.5.
  • Mean Calculation – The mean is calculated by summing all the values in a dataset and dividing by the number of values.
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