During a math test, four students got the following scores: 75, 80, 90, and 85. What is the median test score?
Answer (2)
To find the median of a set of numbers, you first need to arrange the numbers in ascending order. The median is the middle number when the numbers are listed from smallest to largest.
Let's look at the test scores given: 75, 80, 90, and 85.
First, arrange these scores in ascending order: 75, 80, 85, 90.
With four numbers, the dataset is even, so the median will be the average of the two middle numbers.
The two middle numbers in this list are 80 and 85.
To find the average of these two numbers, you add them together and then divide by 2: Average = 2 80 + 85 = 2 165 = 82.5
Therefore, the median test score is 82.5.
In summary, the median provides a measure of central tendency which helps to understand the center of a data set. In this case, the median score of 82.5 gives a sense of the middle performance among these students.
The median test score of the four students is 82.5. This is calculated by arranging the scores in order and averaging the two middle scores. Therefore, the median gives a sense of the central performance among the students.
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