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After every score in a sample is multiplied by 3, the mean is calculated and found to be M = 21. What was the mean for the original scores?

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Solution 1

To find the original mean before the scores were multiplied by 3, we can use the following steps:

  1. Let the original mean be denoted by μ \mu .
  2. According to the problem, after every score in the sample is multiplied by 3, the new mean is calculated to be M=21 M = 21 .
  3. When each score in a Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI  is a powerful AI-powered study tool designed to help you to solve study problem.
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