Mathematics ACT Aspire Practice Test

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Study for the Mathematics ACT Aspire Test. Use flashcards, multiple choice questions, and detailed explanations. Get prepared for your exam!

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How do you find the average of a set of numbers?

  1. Add all the numbers and multiply by the count of numbers

  2. Add all the numbers and divide by the count of numbers

  3. Find the median of the numbers

  4. Take the highest number and subtract the lowest

The correct answer is: Add all the numbers and divide by the count of numbers

To find the average of a set of numbers, the correct approach is to add all the numbers together and then divide the sum by the count of numbers in that set. This method provides a measure of central tendency that represents the "typical" value of the numbers in the set. When you add all the numbers, you combine their values, and dividing by the count allows you to spread that total evenly across each number in the set. This gives you the mean, which is the average value you're looking for. Other choices do not correctly describe the process for calculating the average. Finding the median, for example, involves identifying the middle value in a sorted list of numbers, which is different from calculating the average. Subtracting the lowest number from the highest provides a range but does not give any indication of the average value of the set. Therefore, dividing the total by the count is the proper method to achieve the average.

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