Mean & Median Questions

[Guest]

What is the mean and median of the following set of numbers: {12, 15, 20, 25, 30}?

Mean (Average): To find the mean, add up all the numbers and then divide by the total count of numbers.
(12 + 15 + 20 + 25 + 30) / 5 = 102 / 5 = 20.4

Median: To find the median, first arrange the numbers in ascending order. In this case, the numbers are already in ascending order. Then, find the middle number. Since there are 5 numbers, the middle number is the third number, which is 20.

So, the mean of the set is 20.4, and the median is 20.

[Guest]

Mean (Average):
To find the mean, add up all the numbers in the set and then divide by the total count of numbers.

Mean = (12 + 15 + 20 + 25 + 30) / 5
Mean = 102 / 5
Mean = 20.4

So, the mean (average) of the set is 20.4.

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To find the median, first arrange the numbers in ascending order. In this case, the numbers are already in ascending order. Then, find the middle number. Since there are 5 numbers, the middle number is the third number, which is 20.

So, the median of the set is 20.

[Guest]

Regarding the procedure, you are entirely correct!

Just to be clear, your mean is right because adding 12 + 15 + 20 + 25 + 30 is 102 and dividing by 5 yields 20.4.

Since there are five choices for the median and the numbers are already in order, the middle value (the third value) is 20, which is likewise accurate.

✅ Median = 20 ✅ Mean = 20.4

You did a great job outlining the procedures; that's precisely how you compute both.