Multiple choice

The table below shows the number of students enrolled in five colleges over the five years (2010 to 2014). Year/College A B C D E 2010 400 270 350 430 470 2011 430 300 330 450 490 2012 370 250 360 470 410 2013 410 310 370 420 430 2014 420 290 340 480 480 What is the average number of students studying in college D over the given years?

  1. 450

  2. 420

  3. 430

  4. 440
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A Correct answer
Explanation

The values for college D over the years 2010 to 2014 are 430, 450, 470, 420, and 480. The sum is 430 + 450 + 470 + 420 + 480 = 2250. The average is 2250 / 5 = 450.

AI explanation

Using the basic average formula, the average equals the sum of the values divided by the number of values. From the table, the number of students in college D over the five years is 430, 450, 470, 420, and 480. Adding these figures gives a total of 2250 students. Dividing this sum by 5 years yields an average of 450 students.

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